Add komodo IDE file to gitignore
Check bad start date in single page booking

 - Check start date in query string of single page booking
 - Change room.check_advance_days() to always return a boolean
Limit choice of days in 3-step booking

     - Add new bar to the calendar to show days where booking is not possible.
     - Replace error report with nicer message.
     - Extend the Bar class to accept a room id directly upon instantiation
       (as a keyword argument)
     - fixes #1586
Post wip changes

 - rename barDisable -> barOutOfRange
 - rename Bar.DISABLED -> Bar.OUT_OF_RANGE
 - rename _produce_disabled_bars() -> _produce_out_of_range_bars()
 - rename label Booking not allowed -> Too early to book
 - remove unused sass rule for bar borders
 - remove rule for IE version prior to IE9
 - remove unused import
 - move called to produce_out_of_range_bars() from _produce_candidate_bars()
   to _produce_bars()
Merge branch '1586-fix-booking-days-limit' of github.com:jacquesd/indico into 1586-fix-booking-days-limit

Conflicts:
	indico/modules/rb/controllers/user/reservations.py
	indico/modules/rb/views/calendar.py