The token amount displayed when confirming a token transaction was
wrongly being converted to a string in the container. As a result, the
conversion into the user's preferred currency would fail.
A default value of '0' was added for the token amount as well, to
prevent `undefined` from being rendered as the value. Really the value
should never be undefined, but it was rather difficult to handle that
case without a deeper investigation into how it might occur. The 0
default is consistent with existing rendering logic.
* Introduce delay for eth_estimateGas calls with in test
* Add test that fails when gas estimates of contract method calls without gas are too high.
* Get transaction gas data from unApprovedTxs instead of confirmTransaction
* Fix selection of gas data in gas-modal-page-container.container
* Lint changes related to Version-6.7.2-gasLimitFix
* Fix e2e tests on Version-6.7.2-gasLimitFix
* Fix unit and integration tests for changes from Version-6.7.2-gasLimitFix
* more e2e fixes
* Add assertions for transaction values on confirm screen
* Fix display of transaction amount on confirm screen.
