[IMP] Timetable: Weekly view
[FIX] Deletion of Evaluation Alarms
[FIX] Category materials sorted
[IMP] Adapt material editor for categories
[IMP] Material listing in Category Display

- Some PEP8 fixes
- Closes #1468
[IMP] Sassification of category css

- Allow managers to see material widget if not material
- See #1468
[IMP] Moved category sass to modules
[IMP] Category material icon when expanded
[FIX] SASS class for manager list
[FIX] Category materials display Link
[MIN] autocomplete=off for session titles

see bd1c44f
[FIX] Add app context to offlineMirror
[IMP] Ordering Category Material

- Manager list on the top
[FIX] Delete bookings when delete conference
[FIX] Allow same room to different sessions
[FIX] reportlab version in setup.py
[IMP] Allow landscape page orientation for badges

Useful e.g. when creating certificates (one page per attendant)
[FIX] Do not clone alarms with absolute date
[FIX] UN-link coordinator when he's removed
[FIX] icon calendar misplaced in firefox