feat: Relates to #337. Part 1 of 2 - Account view - Change header account design

fix: Relates to #324. Show link to Blockscout upon confirmed, not the first confirmation

feat: Relates to #264. SUI-based drop-down menu with Backup Account and Add Tokens

* Remove useless .header-container

* Add width to .account_information to fit full title width

* Use `flex-grow` instead of abbreviation `flex`

* Use justify-content: left to align account info and avatar to left and remove flex: 0 from .header-tokens

CI: add key for the cache

Limited cache

* Remove titleOffset and add placeholder width for header nav buttons

* Remove passing `screen` prop for specific pages

Bump master to 0.3.0

Change Cancel to Back button. Password field autofocus on Unlock component

Switch to stable Parity Ethereum