Fix equipment rendering in notification emails
Move vc support emails to settings

* Remove support email column from locations
* Add Alembic revision
Add holiday name column
Fix holiday check, show holiday name
Reword booking error dialog
Remove my pre-bookings quick search
Show date if there's no holiday name
Fix go_to_room function when not cloning a booking
Remove Location.support_emails from SA migration
Require confirmation for sqlalchemy migration
Use conferenceHolderIterator for whoosh migration
Make conferenceHolderIterator much nicer

colored output, proper line clearing, remaining time display