Fixed problem with empty possible answers
Add view to find all sessions identified by a list of course ids
Added README with general introduction and usage
Add courseType to session#by_creator

The course type is needed to highlight sessions connected to a LMS in
session list.
Rename rev property to _rev to fix deserialization warnings in backend
Add view for database authentication
Allow filtering of interposed questions by creator
Allow counting for questions by users
Remove views obsoleted by removal of releasedFor per question setting
Delete obsolete foot_vote design document
Implement DELETE, do not require body for POST
Add migration to delete food_vote, run view cleanup after migrations
Reflect repository renamings
Added views for loading of question ids only
Removed obsolete views
Deleted obsolete design documents and views
Added missing view
Removed unused view
Show full interposed question document