* Show fiat on confirm screen on multilayer-fee network
* Disable gas editing on optimism
* Fix send max mode on optimism
* Represent layer 2 gas fee as a single value
* Hide gas fee edit UI on optimism
* Improvement multilayer-fee-message styling
* Lint fix
* Fix locales
* Remove unnecessary code change
Co-authored-by: David Walsh <davidwalsh83@gmail.com>
* Support for Layer 2 networks with transaction fees on both layers
* Use variable name in transaction-breakdown
* Add comment on code source to ui/helpers/utils/optimism/fetchEstimatedL1Fee.js
* Fix unit tests
* Ensure values passed to are defined
* Fix activity log
* Upgrade style from Enzyme to React Testing Library
* Use real i18n provider instead of a fake one so that we can look for
English text instead of just i18n strings, improving readability
