This change:
- Ensures that the tab bar stays hidden when disabling stories from
within the stories tab
- Updates the keyboard constraint when orientation changes
- Updates the stories search bar constraint to never resize the safe
area layout guide
* Remove the useless shouldUseTheme
* Remove the useless shouldBottomViewReserveSpaceForKeyboard
* Add ViewControllerLifecycle
* Use more sensible constraints for keyboard layouts
* Consistent theme updates. themeDidChange is what you subclass, applyTheme is each class' internal application of theme changes, if needed
* Add app lifecycle hooks
* pr feedback
* pass through touches on the keyboard layout view(s)
* fix lint
