Updated setting display to show mulitple number inputs under one heading
group.
Updated settings to use general number field form view template.
Updated translations to match display changes, and to advise on counts.
Added page count control for search results.
Added setting service method, to get settings as integers, with
min/max/default control.
Updating sorting group to be names "Lists & Sorting".
Added tests to cover.
- Changes to a sort set will now auto-apply to assinged books (basic
chunck through all on save).
- Added book count indicator to sort set list items.
- Deletion now has confirmation and auto-handling of assigned
books/settings.
