BK-1197 Implement new Settings tab in the editor
Merge branch 'BK1197' into 2.0
BTPRO-1226 Disable save button after the save
BK-1168 Remove OER Aloha plugins which are not in use
BK-1225 Footer text needs updating in default template
BK-1227 Save with comment saves multiple entries
BK-1228 Book view link not working in Book thumbnails
BK-1219 Bookbar in toc/edit screen needs icons with tooltips, instead of regular buttons