Added friends section in search.
This is because contacts is now used in signal for something else and we don't want to clash meanings.
Styling fixes
Add dropdown options into mainheader
Updated styling
Restore StartNewConversation to the old ui style of loki messenger.
Fix friend search display.
Fix header expand animation.
Hooked up menu actions.
Linting.
More styling changes.
Fix tests.
Added back in the loki logo below the gutter.
Fix toast positioning.
Fix context menu showing incorrectly on virtual lists.
Added tabs.
Linting
