[FIX] Add currentAW to ContextManager in http api

- Closes #1351
[FIX] regular expression for sessions in rec.mgr.
[FIX] Timetable contrib details speakers list

- Closes #1356
[FIX] Rename getLinkRoomIp to getLinkRoomAttribute

- More generic because we can get different attributes
[IMP] Ravem API calls added for vidyoparonama

- Closes #1343
[IMP] OAuth: Return expiration when get AccesToken
Merge branch 'v1.1'

Conflicts:
	indico/MaKaC/plugins/Collaboration/Vidyo/handlers.py
	indico/MaKaC/plugins/Collaboration/tpls/BookingDisplay.tpl
	indico/MaKaC/plugins/Collaboration/tpls/EventDetailBanner.tpl
	indico/MaKaC/plugins/Collaboration/tpls/VideoService.tpl
	indico/MaKaC/webinterface/rh/oauth.py
[IMP] Add some __repr__ methods
[MIN] Interesting events. Still very much WIP
[IMP] Add task to update category suggestion info
[FIX] CategoryDisplay UH when used w/o target param

e.g. in the http api when fossilizing
[IMP] Show suggestions in the dashboard
[FIX] Missing >
[FIX] Unusuggest category when removing it from favs
[MIN] Python 2.6 collections.Counter
[MIN] Fix typo (missing .)
[IMP] Make the suggestion box look nicer
[FIX] Don't fail if redis is not available
[IMP] Add option to never suggest certain categs
[FIX] Check no-suggestions flag for parent categs