Put Sort command as first entry into main menu,
and immediately exit menu after sorting has changed,
to allow quicker adjustments than before.
Move commands to update or rebuild the cache from
Settings into main menu for improved discoverability,
and since they aren't really proper settings anyway.
Add 'Display' submenu to Settings which now houses the
following more 'esoteric' options that are likely to
need only infrequent adjustments:
- Backlight
- Display FPS
- Spacing
- Center Margin
- Number of Slides
- Zoom
- Resize Covers
Change-Id: I5bb3ee922cb870f9b6db9bd6ac9480d49f5decf3