Updates book drag handling to be limited to the handle so scrolling can
be done on the items themselves.
Increased handling area and improved styling to support
- Added ability to search books list (Local simple text match).
- Added handles, hover-states and cursor states for better user
interaction and clearer use of drag & drop.
- Improved styles for dark mode.
- Converted shelf sort component to newer component format.
- Modernized shelf controller code a little.
Related to #3266
