* addding the legacy tokenlist, tuning token detection OFF by default, adding new message while importing tokens
updating the controller version and calling detectNewToken on network change
fixing rebase error
Run yarn lavamoat:auto for updating policies
updating lavamoat
Deleted node modules and run again lavamoat auto
fixing rebase issues
updating lavamoat policies
updating lavamoat after rebasing
policies
updating custom token warning and blocking detectedtoken link when tpken detection is off for supported networks
to update the token in fetchTosync
updating the contract map object
Revert build-system lavamoat policy changes
Move token list selection logic from components to getTokenList selector
updating the tokenList
Update lavamoat
Fix error
updating lavamoat
lint fix
fix unit test fail
fix unit test fail
lint fix
fixing rebase locale error
rebase fix
Revert build-system policy changes
temp
addressing review comments
* rebase fix
* set more appropriate default for ticker symbol when wallet_addEthereumChain is called
* throw error to dapp when site suggests network with same chainId but different ticker symbol from already added network, instead of showing error and disabled notification to user
* Removed infura v3 key from rpcUrl display
* Code refactor
* Fixed error
* Prevent submission of form when editing an featured rpc and there is a chainId error
* Add optional chaining to rpcurls to prevent type errors
Co-authored-by: Dan J Miller <danjm.com@gmail.com>
* MetaMetrics: identify number_of_tokens
* MetaMetrics: update number_of_tokens
do not filter by unique addresses.
Each token contract x chain id combo is a unique contract
* MetaMetrics: update MetaMetricsTraits @typedef
- add number_of_tokens
* MetaMetrics: clean up number_of_tokens
* MetaMetrics: alphabetize in test
* Add new user trait for 'Number of NFT collections'.
Signed-off-by: Akintayo A. Olusegun <akintayo.segun@gmail.com>
FIx JS DOC
Signed-off-by: Akintayo A. Olusegun <akintayo.segun@gmail.com>
Arrange TRAITS in alphabetical order
Signed-off-by: Akintayo A. Olusegun <akintayo.segun@gmail.com>
Unit Tests for allCollectibles traits tracking.
Signed-off-by: Akintayo A. Olusegun <akintayo.segun@gmail.com>
change cid to chainId
Signed-off-by: Akintayo A. Olusegun <akintayo.segun@gmail.com>
* invert condition
Signed-off-by: Akintayo A. Olusegun <akintayo.segun@gmail.com>
* jsdoc - alphabetical order
Signed-off-by: Akintayo A. Olusegun <akintayo.segun@gmail.com>
* change {string} to the literal {number_of_nft_collections}
Signed-off-by: Akintayo A. Olusegun <akintayo.segun@gmail.com>
* Optimize _getNumberOfNFTs
Signed-off-by: Akintayo A. Olusegun <akintayo.segun@gmail.com>
* Create shared `TRAITS` constant
Create a new constant in shared/constants/metametrics.js called TRAITS.
Using the other issues in this epic as guidance, populate the constant with traits.
Add Documentation to this constant about what each trait is.
Signed-off-by: Akintayo A. Olusegun <akintayo.segun@gmail.com>
* use field names as the constants
only interested in 4 traits now for the MVP
Signed-off-by: Akintayo A. Olusegun <akintayo.segun@gmail.com>
* cut down comments length for readability.
Signed-off-by: Akintayo A. Olusegun <akintayo.segun@gmail.com>
* Lint fixes.
Signed-off-by: Akintayo A. Olusegun <akintayo.segun@gmail.com>
* 80 chars comments length
Signed-off-by: Akintayo A. Olusegun <akintayo.segun@gmail.com>
* fix issue where we show contract address as recipient when calling safe transfer method on erc721 or erc1155 contracts
* updates function name getTransactionData -> parseStandardTokenTransactionData, and adds documentation
* Initial native notification implementation
* Simplify implementation
* Implementation based on RateLimitController
* Update controllers package
* Add notification to permission list
* Wire up correctly
* Remove snap_notify from the exclusion list
This PR adds `snaps` under Flask build flags to the extension. This branch is mostly equivalent to the current production version of Flask, excepting some bug fixes and tweaks.
Closes#11626
When a lot of transactions are occurring on the network, such as during
an NFT drop, it drives gas fees up. When this happens, we want to not
only inform the user about this, but also dissuade them from using a
higher gas fee (as we have proved in testing that high gas fees can
cause bidding wars and exacerbate the situation).
The method for determining whether the network is "busy" is already
handled by GasFeeController, which exposes a `networkCongestion`
property within the gas fee estimate data. If this number exceeds 0.66 —
meaning that the current base fee is above the 66th percentile among the
base fees over the last several days — then we determine that the
network is "busy".
ESLint rules have been added to enforce our JSDoc conventions. These
rules were introduced by updating `@metamask/eslint-config` to v9.
Some of the rules have been disabled because the effort to fix all lint
errors was too high. It might be easiest to enable these rules one
directory at a time, or one rule at a time.
Most of the changes in this PR were a result of running
`yarn lint:fix`. There were a handful of manual changes that seemed
obvious and simple to make. Anything beyond that and the rule was left
disabled.
* added wrapper around account list to prevent storybook from collapsing the list
* updated translation files
* added snap-connect page
* refactored account list out of the choose account component
* fixed width
* removed unnecessary scss from choose-account component, fixed props in choose account story
* removed snaps-connect page, added comments to ChooseAccount
* updated choose account subtitle text, updated styling for title & subtitle, removed redundant account list story
* updated component name, updated paths
* fixed linter errors
* added comments
* removed unused message
* removed selectAccounts key from all locales
* updated class name for account list header, updated allAreSelected function to use length checks
* Revert "removed unused message"
This reverts commit 32771bc83c08f120825ef75f0741f3034e7dbecb.
* Revert "removed selectAccounts key from all locales"
This reverts commit ccfa4a860f9a75693d893d7c404384e719de297e.
* updated locale messages to use selectAccounts key
* removed stray import
* updated scss
* updated translation key
* removed chooseAccounts key from en locale
* removed optional chaining
* changes
* updated subjectMetadata
* updated subject types
* update useOriginMetadata function to include unknown subject type
* updated permission connect header props, removed host and added subjectType to targetSubjectMetadata
* added subjectType to targetSubjectMetadata
* removed console.log
* changed prop name to iconUrl
This PR introduces the concept of subject _types_ to be associated with each subject in the `SubjectMetadataController`, and used for control flow in our RPC stack (`setupProviderEngine` and so forth).
We already differentiate between "types" of subjects in various places on an ad hoc basis via boolean flags (e.g. `isInternal` in our RPC stack) or the presence/absence of certain values in the subject's metadata (specifically `metadata.extensionId`). The status quo is manageable if not ideal, but will start to become untenable with the introduction of Snaps in the near future.
Therefore, this PR establishes a `SUBJECT_TYPES` enum and adds the `subjectType` property to the metadata of each subject. A new migration is added to accomplish this. Finally, we specify and `INTERNAL` subject type to distinguish internal from external requests.
# Permission System 2.0
## Background
This PR migrates the extension permission system to [the new `PermissionController`](https://github.com/MetaMask/snaps-skunkworks/tree/main/packages/controllers/src/permissions).
The original permission system, based on [`rpc-cap`](https://github.com/MetaMask/rpc-cap), introduced [`ZCAP-LD`](https://w3c-ccg.github.io/zcap-ld/)-like permissions to our JSON-RPC stack.
We used it to [implement](https://github.com/MetaMask/metamask-extension/pull/7004) what we called "LoginPerSite" in [version 7.7.0](https://github.com/MetaMask/metamask-extension/releases/tag/v7.7.0) of the extension, which enabled the user to choose which accounts, if any, should be exposed to each dapp.
While that was a worthwhile feature in and of itself, we wanted a permission _system_ in order to enable everything we are going to with Snaps.
Unfortunately, the original permission system was difficult to use, and necessitated the creation of the original `PermissionsController` (note the "s"), which was more or less a wrapper for `rpc-cap`.
With this PR, we shake off the yoke of the original permission system, in favor of the modular, self-contained, ergonomic, and more mature permission system 2.0.
Note that [the `PermissionController` readme](https://github.com/MetaMask/snaps-skunkworks/tree/main/packages/controllers/src/permissions/README.md) explains how the new permission system works.
The `PermissionController` and `SubjectMetadataController` are currently shipped via `@metamask/snap-controllers`. This is a temporary state of affairs, and we'll move them to `@metamask/controllers` once they've landed in prod.
## Changes in Detail
First, the changes in this PR are not as big as they seem. Roughly half of the additions in this PR are fixtures in the test for the new migration (number 68), and a significant portion of the remaining ~2500 lines are due to find-and-replace changes in other test fixtures and UI files.
- The extension `PermissionsController` has been deleted, and completely replaced with the new `PermissionController` from [`@metamask/snap-controllers`](https://www.npmjs.com/package/@metamask/snap-controllers).
- The original `PermissionsController` "domain metadata" functionality is now managed by the new `SubjectMetadataController`, also from [`@metamask/snap-controllers`](https://www.npmjs.com/package/@metamask/snap-controllers).
- The permission activity and history log controller has been renamed `PermissionLogController` and has its own top-level state key, but is otherwise functionally equivalent to the existing implementation.
- Migration number 68 has been added to account for the new state changes.
- The tests in `app/scripts/controllers/permissions` have been migrated from `mocha` to `jest`.
Reviewers should focus their attention on the following files:
- `app/scripts/`
- `metamask-controller.js`
- This is where most of the integration work for the new `PermissionController` occurs.
Some functions that were internal to the original controller were moved here.
- `controllers/permissions/`
- `selectors.js`
- These selectors are for `ControllerMessenger` selector subscriptions. The actual subscriptions occur in `metamask-controller.js`. See the `ControllerMessenger` implementation for details.
- `specifications.js`
- The caveat and permission specifications are required by the new `PermissionController`, and are used to specify the `eth_accounts` permission and its JSON-RPC method implementation.
See the `PermissionController` readme for details.
- `migrations/068.js`
- The new state should be cross-referenced with the controllers that manage it.
The accompanying tests should also be thoroughly reviewed.
Some files may appear new but have just moved and/or been renamed:
- `app/scripts/lib/rpc-method-middleware/handlers/request-accounts.js`
- This was previously implemented in `controllers/permissions/permissionsMethodMiddleware.js`.
- `test/mocks/permissions.js`
- A truncated version of `test/mocks/permission-controller.js`.
Co-authored-by: Mark Stacey <markjstacey@gmail.com>
* support qr based signer
* add CSP for fire fox
* get QR Hardware wallet name from device
* fix qrHardware state missing in runtime
* support qr based signer sign transaction
* refine Request Signature modal ui
* remove feature toggle
* refine ui
* fix notification is closing even there is a pending qr hardware transaction
* add chinese translation, refine ui, fix qr process was breaking in some case
* support import accounts by pubkeys
* refine qr-based wallet ui and fix bugs
* update @keystonehq/metamask-airgapped-keyring to fix that the signing hd path was inconsistent in some edge case
* fix: avoid unnecessay navigation, fix ci
* refactor qr-hardware-popover with @zxing/browser
* update lavamoat policy, remove firefox CSP
* refine qr reader ui, ignore unnecessary warning display
* code refactor, use async functions insteads promise
Co-authored-by: Soralit <soralitria@gmail.com>
* Background clears confirmations on popup close
* [WIP] Remove clearing confirmations through UI
* Confirmations are now rejected instead of cleared
* Erased commented out code
* Fix linter errors
* Changes after code review
* Moved metrics events from onWindowUnload to background
* PR review fixes
* Added abillity to add reason to rejection of messages
* Fix prettier
* Added type metrics event to signature cancel
* Fix test
* The uncofirmed transactions are now cleared even if Metamask is locked
We're bumping from `^6` to `^8`. All imports are now named, and they have been updated. This is a breaking change, in that support for `eth_signTransaction` is added in `^8.0.0`. We do not support this method in our UI, so our middleware stack has been instrumented to reject.
In addition, there are some non-breaking behavioral changes in this version that reviewers should be aware of, see the [7.0.0 release](https://github.com/MetaMask/eth-json-rpc-middleware/releases).
* GridPlus: Adds support for GridPlus Lattice1 hardware wallet
* Fixes issue with switching hardware HD path
The main `Select HD Path` piece of the account selection component was not
properly hooked up to the state manager (`onPathChange`) and the extra
`Popover` component was being used instead.
I'm not sure what the origin of this is, but I don't see why the Popover
is needed at all. I have remove it and hooked `onPathChange` directly into
the HD path selector dropdown.
This was an issue that nearly every Lattice user who had come from Ledger
has contacted us about.
* GridPlus: Addresses QA issues
* Adds Lattice tutorial + image
* Cleans up connectivity issues (see: https://github.com/GridPlus/eth-lattice-keyring/pull/16)
* GridPlus: Adds Firefox support
To connect to the Lattice you need to open a new tab/window and get
login data from it. We were not able to do this for Firefox because
we relied on the `window` API. This is now fixed.
See corresponding changes:
* `eth-lattice-keyring`: https://github.com/GridPlus/eth-lattice-keyring/pull/17
* Lattice connector: https://github.com/GridPlus/wallet-web/pull/152
* GridPlus: Adds missing error path for Firefox
See: 242a93f559
* Check if ledger was successfully able to establish transport on mount of confirm screens
* Update ledger message/action if transport creation was blocked by existing connection
* TEMP: point eth-ledger-bridge-keyring to commite, REMOVE BEFORE MERGE
* Update eth-ledger-bridge-keyring to v0.10.0
* Show test networks toggle button in settings/advanced tab.
Signed-off-by: Akintayo A. Olusegun <akintayo.segun@gmail.com>
* Apply toggle testnet settings and show/hide testnets when on/off
Add localhost to testnet.
Signed-off-by: Akintayo A. Olusegun <akintayo.segun@gmail.com>
* Lint fixes.
Signed-off-by: Akintayo A. Olusegun <akintayo.segun@gmail.com>
* Show add network button
Signed-off-by: Akintayo A. Olusegun <akintayo.segun@gmail.com>
* Open full screen when add network is called.
Signed-off-by: Akintayo A. Olusegun <akintayo.segun@gmail.com>
* Show custonm rpc before testnet rpcs
lint fixes.
Signed-off-by: Akintayo A. Olusegun <akintayo.segun@gmail.com>
* Test cases for network dropdown.
Signed-off-by: Akintayo A. Olusegun <akintayo.segun@gmail.com>
* Test cases for toggle test networks in advanced tab component.
Signed-off-by: Akintayo A. Olusegun <akintayo.segun@gmail.com>
* Lint fixes.
Signed-off-by: Akintayo A. Olusegun <akintayo.segun@gmail.com>
* Fix Locales.
Signed-off-by: Akintayo A. Olusegun <akintayo.segun@gmail.com>
* E2E Tests: Custom RPC is now called Add Network
Signed-off-by: Akintayo A. Olusegun <akintayo.segun@gmail.com>
* Lint fix
Signed-off-by: Akintayo A. Olusegun <akintayo.segun@gmail.com>
* E2E: When Add Network button is clicked, wait for the full screen window to
be visible
Signed-off-by: Akintayo A. Olusegun <akintayo.segun@gmail.com>
* findVisibleElement should use a class. i.e start with a dot
Signed-off-by: Akintayo A. Olusegun <akintayo.segun@gmail.com>
* Hide Dropdown when Add Netwok is clicked.
Only show full screen if it's not already showing.
E2E tests passing.
Signed-off-by: Akintayo A. Olusegun <akintayo.segun@gmail.com>
* Lint fixes
Signed-off-by: Akintayo A. Olusegun <akintayo.segun@gmail.com>
* Fix tests for jest
Signed-off-by: Akintayo A. Olusegun <akintayo.segun@gmail.com>
* Testnets are not being shown by default anymore, tests should use
Mainnet instead.
Signed-off-by: Akintayo A. Olusegun <akintayo.segun@gmail.com>
* Import Button from ui
Change selector name to getShowTestnetworks
Fix button to show full width
Signed-off-by: Akintayo A. Olusegun <akintayo.segun@gmail.com>
* Fix e2e tests
Signed-off-by: Akintayo A. Olusegun <akintayo.segun@gmail.com>
* Remove localhost from INFURA provider types.
Signed-off-by: Akintayo A. Olusegun <akintayo.segun@gmail.com>
* Fix errors in Advanced Tab Component tests
Signed-off-by: Akintayo A. Olusegun <akintayo.segun@gmail.com>
* Lint fixes
Signed-off-by: Akintayo A. Olusegun <akintayo.segun@gmail.com>
* Fix unit tests for advanced tab component.
Signed-off-by: Akintayo A. Olusegun <akintayo.segun@gmail.com>
* Remove deleted elements from e2e tests
Signed-off-by: Akintayo A. Olusegun <akintayo.segun@gmail.com>
* Make sure all tests passed.
Signed-off-by: Akintayo A. Olusegun <akintayo.segun@gmail.com>
* Lint fixes
Signed-off-by: Akintayo A. Olusegun <akintayo.segun@gmail.com>
The build type (i.e. the distribution) is now included in the Sentry
environment during setup, for all builds except the "main" build. This
will allow us to track Flask and beta errors separately from other
errors.
A constant was created for the build types. The equivalent constant in
our build scripts was updated to match it more closely, for
consistency. We can't use the same constant in both places because our
shared constants are in modules that use ES6 exports, and our build
script does not yet support ES6 exports.
The singular `BuildType` was used rather than `BuildTypes` to match our
naming conventions elsewhere for enums. We name them like classes or
types, rather than like a collection.
Relates to #11896
* Connect ledger via webhid if that option is available
* Explicitly setting preference for webhid
* Use ledgerTransportType enum instead of booleans for ledger live and webhid preferences
* Use single setLEdgerTransport preference methods and property
* Temp
* Lint fix
* Unit test fix
* Remove async keyword from setLedgerTransportPreference function definition in preferences controller
* Fix ledgelive setting toggle logic
* Migrate useLedgerLive preference property to ledgerTransportType
* Use shared constants for ledger transport type enums
* Use constant for ledger usb vendor id
* Use correct property to check if ledgerLive preference is set when deciding whether to ask for webhid connection
* Update eth-ledger-bridge-keyring to v0.9.0
* Only show ledger live transaction helper messages if using ledger live
* Only show ledger live part of tutorial if ledger live setting is on
* Fix ledger related prop type errors
* Explicitly use u2f enum instead of empty string as a transport type; default transport type to webhid if available; use constants for u2f and webhid
* Cleanup
* Wrap ledger webhid device request in try/catch
* Clean up
* Lint fix
* Ensure user can easily connect their ledger wallet when they need to.
* Fix locales
* Fix/improve locales changes
* Remove unused isFirefox property from confirm-transaction-base.container.js
* Disable transaction and message signing confirmation if ledger webhid requires connection
* Ensure translation keys for ledger connection options in settings dropdown can be properly detected by verify-locales
* Drop .component from ledger-instruction-field file name
* Move renderLedgerLiveStep to module scope
* Remove ledgerLive from function and message names in ledger-instruction-field
* Wrap ledger connection logic in ledger-instruction-field in try catch
* Clean up signature-request.component.js
* Check whether the signing address, and not the selected address, is a ledger account in singature-request.container
* Ensure ledger instructions and webhid connection button are shown on signature-request-original signatures
* Improve webhid selection handling in select-ledger-transport-type onChange handler
* Move metamask redux focused ledger selectors to metamask duck
* Lint fix
* Use async await in checkWebHidStatusRef.current
* Remove unnecessary use of ref in ledger-instruction-field.js
* Lint fix
* Remove unnecessary try/catch in ledger-instruction-field.js
* Check if from address, not selected address, is from a ledger account in confirm-approve
* Move findKeyringForAddress to metamask duck
* Fix typo in function name
* Ensure isEqualCaseInsensitive handles possible differences in address casing
* Fix Learn More link size in advanced settings tab
* Update app/scripts/migrations/066.js
Co-authored-by: Mark Stacey <markjstacey@gmail.com>
* Update ui/pages/settings/advanced-tab/advanced-tab.component.test.js
Co-authored-by: Mark Stacey <markjstacey@gmail.com>
* Add jsdoc comments for new selectors
* Use jest.spyOn for mocking navigator in ledger webhid migration tests
* Use LEDGER_TRANSPORT_TYPES values to set proptype of ledgerTransportType
* Use LEDGER_TRANSPORT_TYPES values to set proptype of ledgerTransportType
* Fix font size of link in ledger connection description in advanced settings
* Fix return type in setLedgerTransportPreference comment
* Clean up connectHardware code for webhid connection in actions.js
* Update app/scripts/migrations/066.test.js
Co-authored-by: Mark Stacey <markjstacey@gmail.com>
* Update ui/ducks/metamask/metamask.js
Co-authored-by: Mark Stacey <markjstacey@gmail.com>
* Add migration test for when useLedgerLive is true in a browser that supports webhid
* Lint fix
* Fix inline-link size
Co-authored-by: Mark Stacey <markjstacey@gmail.com>
* Replace hardcoded sent ether label on confirm screen
* replace transaction type SENT_ETHER with network agnostic SENDING_NATIVE_ASSET
* remove sentEther translation base
* make backwards compatible with lingering transaction of legacy sentEther type
* update localalization files
* fixup legacy sentEther transaction type
* changing new transaction type away from localization string
* revert migration tests
* update fixtures and test data
* update name of new transaction type
* add migration
* remove legacy SENT_ETHER from transaction types enum object
* Update contract address validations in swaps for different networks
* Add support for direct contract swaps for wrapping and unwrapping
* Add WETH_RINKEBY_CONTRACT_ADDRESS
* EIP-1559 - Provide support for Ledger
* Update ui/selectors/selectors.js
Co-authored-by: Mark Stacey <markjstacey@gmail.com>
* Add shared constants for hw types
* bump eth-ledger-bridge-keyring to v0.7.0
Co-authored-by: David Walsh <davidwalsh83@gmail.com>
Co-authored-by: Mark Stacey <markjstacey@gmail.com>
Co-authored-by: Alex <adonesky@gmail.com>
* Stop GasFeeController polling when pop closes
* Stop estimate gas polling on window unload
* lint + comments
* Improve client closed logic
* lint
* Add back _beforeUnload on unmount in gas-modal-page-container
* Add full check and call onClientClosed method for notifcation environment
* Add gas pollingToken tracking to appStateController and use to disconnect polling for each environment type
* remove unused method
* move controller manipulation logic from background.js to metamask-controller, disaggregate methods
* add beforeunload handling to reset gas polling tokens from root of send page
* cleanup, lint and address feedback
* clear appState gasPollingTokens when all instances of all env types are closed, fix pollingTokenType arg from onEnvironmentTypeClosed call in metamask-controller
* mock new methods to fix tests
* final bit of cleanup + comments
Co-authored-by: Dan Miller <danjm.com@gmail.com>
* Fix a check for EIP presense
* Add support for Polygon
* Update default Polygon URL
* Trigger Build
* Use a more user-friendly error message for disabled Swaps API calls
* Moving RPC Urls to network constants
* Including RPC url in switchEthereumChain requestData
* Setting project id to var
* Fix built-in networks switch-ethereum-chain
`switch-ethereum-chain` did not work correctly with built-in networks.
It was treating them as custom networks, rather than as built-in
networks. This affected how they were displayed in the network
dropdown, and resulted in slight differences to the network stack used
as well.
The problem was that `updateRpcTarget` was used, which was meant for
custom networks only. Now that `setProviderType` is used in the case of
a built-in network, the behaviour should match the network switcher
exactly.
Co-authored-by: Mark Stacey <markjstacey@gmail.com>
* Show custom tokens in Swaps
* Add messages for adding a custom token in Swaps
* Add the first version of importing custom tokens in swaps
* Fix lint rules
* Create a new component: ImportToken
* Remove a pointer cursor from regular heading
* Fix a CSS issue for tokens with long names
* Update a comment
* Don’t return a custom token if it doesn’t have symbol or decimals
* Only search by contract address if nothing was found
* Track “Token Imported” event
* Fix unit tests
* Import tracking for “Token Imported”, increase token icon font size
* Disable token import for Source Token
* Update logic and content for notifications, update tests
* Do not hide a dropdown placeholder on click, so a user can click on a link
* Update a key name
* Update styling for the “danger” type notification in Swaps
* Show either a warning or danger notification based on token verification occurences
* Remove testnets from SWAPS_CHAINID_DEFAULT_BLOCK_EXPLORER_URL_MAP
* Use the “shouldSearchForImports” prop
* Create a new function for handling token import: “onOpenImportTokenModalClick”
* Filter token duplicities before iterating over tokens
* Use “address” instead of “symbol” for checking uniqueness
* Trigger Build
* Use a new API (/token) to get token data for importing in Swaps
* Temporarily decrese Jest threshold for functions
* Use correct block explorer name and link in swaps when on custom network.
* Fix up custom etherscan link code in build-quote.js
* Use blockExplorerUrl hostname instead of 'blockExplorerBaseUrl'
* Use correct etherscan-link method for token links in build-quote
* Create correct token link in build-quote for mainnet AND custom networks
* Block explorer url improvements in awaiting-swap.js and build-quote.js
* Use swapVerifyTokenExplanation message with substitutable block explorer for all applicable locales
* Ensure that block explorer links are not shown in awaiting-swap if no url is available
* Swaps support for local testnet
* Create util method for comparison of token addresses/symbols to default swaps token
* Get chainId from txMeta in _trackSwapsMetrics of transaction controller
* Add comment to document purpose of getTransactionGroupRecipientAddressFilter
* Use isSwapsDefaultTokenSymbol in place of repeated defaultTokenSymbol comparisons in build-quote.js
