* 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
The `assert` module has two modes: "Legacy" and "strict". When using
strict mode, the "strict" version of each assertion method is implied.
Whereas in legacy mode, by default it will use the deprecated, "loose"
version of each assertion.
We now use strict mode everywhere. A few tests required updates where
they were asserting the wrong thing, and it was passing beforehand due
to the loose matching.