Closes #4876: fix settings menu background colours
Closes #4876: fix settings menu background colours

The background colours in the settings menu seem to have been wiped when moving from Activity to Fragment. Re-added photonInk80 and photonInk90 as FrameLayout and Toolbar BGs respectively.

mozilla-mobile/focus-android,mozilla-mobile/focus-android,mozilla-mobile/focus-android,mozilla-mobile/focus-android,mozilla-mobile/focus-android,mozilla-mobile/focus-android