BK-876 Dialogs in Aloha plugins do not work because html code is broken
BK-875 Check if content in the editor has been modified
BK-869 File name too long in Image Manager dialog
BK-877 Book Title Aloha plugin does not initialise every time
BK-879 Link plugin for Aloha throws error when editor is not in focus
BK-881 Icon generator for tab icons should be configurable
Merge remote-tracking branch 'sf_booktype/2.0' into bojo