Added notification task for upcoming occurrences
Fixed json decode not deserializing strings
Fixed DisplayTZ outside of request context
Scheduler now commits on Postgre
Added OccurrenceNotificationsTask in the migration

* The script also removes references to old RoomReservationTask in the scheduler
Fixed link to book a room from map of rooms
Post-WIP fixes
Added warning for conflicts in booking pages
Fixed datepicker wrong days in advance limitation

Caused due to the fact that the widget adds max_advance_days to the
maximum date, therfore it's one day later than allowed.
Improved interface in booking pages

Videoconference options are hidden when not needed
Shorter wording for some elements
Removed unnecesary CSS class
Fix ugly text in rb map widget
Post-rebase fixes
Removing some unused code
Migration: is_cancelled instead of is_sent...
RB HTTP API w/ new DB (no booking creation yet)
Remove unused import
Deny access to RB api if RB is disabled
Add some comments and restore _type
Fix ical export
Better candidate bar TT in single-page booking

The "Click to book it" tooltip was a lie, just like the cake!