fix config passes multiple times to certain templates

use bookbag dialog box for remove from shelf in detail.html

fix action bar disappears on reload when no results

persist filters across reload

fix new shelf pill appears after add button on detail.html

add kobo sync option to create/edit shelf popovers

add shelves to filterbar and detail.html

rework details page to better handle shelves and other fields

add shelves to filterbar & reorder filter categories

add shelves to books function

update dev environment instructions

generate thumbnails by default

Merge branch 'pr-3'

add abort controller to search, adjust debounce

add search-specific empty state