added page reordering
Made language selection optional
Added abilty to change content models
Combined page management, changed logic for book deletion
Added cmodel check
pushed current colelctions to top of list
Added thumbnails to page reordering
added jquery previews
added warnings on OCR replacement
Made language selection more robust
Made array filtering more robust
removed extra datastreams
Consolidated book handling functions
Added MODS relabelling
added Upload All button
Changed label
Fixed lableing bug
Added entity content models
updated button
Changed links to list items