- Removed having sort items in tabbing order since they have no action.
- Updated "show other books" list to add upon single selection since it
was not clear how these were added (double press) without then seeing
the add button, and even then the add button would be after the scroll
list.
- Fixes multi-select functionality.
- Updated other books to be sticky.
- Added some general intro/desc text.
- Updated sort boxes to be collapsible.
- Cleaned up other books styling.
