Refactor styles again, this time trying to seperate the more
layout-specific attributes so that layouts become more re-usable.
This also updates the naming conventions of styles.
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.
Change most of the external layout/drawable code to use
colorControlHighlight instead of selection_color so that control
over which kind of selection color is used is more fine-grained.
Collapse amber and yellow into a single accent [Yellow], remove the neutral accent due to UI isuses, and darken light-mode accents across the board to be more visible.
Change the album detail layout to rely on a RecyclerView entirely instead of a NestedScrollView, at the cost of some functionality I'll need to re-add.
