Do not propagate conflicts
Change LHC RBB style to CERN Committee
Make Cern Committee style more readable
Fix css for long contribution titles

* Limit contribution title in CERN Committee style
* Add padding to itemTime
Preselect room when booking for event with a room
Fix accepting prebooking with colliding prebookings
Improve 'Conflicts at the same time'

- Only show header if there are actually conflicts
- Remove ugly spaces inside parentheses
Fix booking search for both cancelled & rejected

Since a booking cannot be have both states at the same time, it makes
sense to search for bookings in either state if both are selected
Blacklist /admin/ in robots.txt
Add new reservation export filter: occurs_on

Expects a date in YYYY-MM-DD form and restricts the matching
reservations to ones with an occurrence on the given date
Add booked_for_user_email to reservation export
Fix iterdays wrong days when sTime > eTime
Don't choke on non-ASCII event rooms/locations
Fix error when deleted contribs in speaker list
Fix error with native NotFound exception
Send calendar updates in UTC
Fix missed rename
Fix iterdays ignoring tzinfo for datetime objects

Also add earliest and latest datetime helpers
Don't call make_app in the dev server
Log double make_app calls w/ traceback