Completely redesign the about UI to remove its dependency on
bottomsheetdialogfragment. That object is such a hassle to deal with an
is the epitome of everything wrong with this horrible platform. This
design will enable further about extensions in the future.
Instead of using @color/background directly, use ?attr/colorSurface
so that changes can be made to the theming easier. This also
resolves some more minor issues regarding certain widget's
backgrounds.
