Merge branch '2.0' of https://github.com/sourcefabric/Booktype into 2.0
BK-1199 Implement book license option in the settings tab
Merge branch '2.0' of https://github.com/sourcefabric/Booktype into 2.0
BK-827 Load/Save functionality must handle new TOC structure
BK-1042 Move constants file to new booktype application
Merge branch 'BK1199' into 2.0
Merge branch 'BK827' into 2.0