Added column is_important to event
added field is_important to views: view, edit and create
Added important tag in requested bookings
Merge branch 'Elch' into E/feature/#100

Conflicts:
	db/schema.rb
Changed the way that the Important flag is displayed to a purple exclamation mark (Placeholder)
replaced room links in event approval from room details to room events
Merge branch 'E/feature/#49' into Elch
Merge branch 'E/feature/#49' into Elch
Merge branch 'Elch' into E/feature/#100

Conflicts:
	app/views/events_approval/index.html.erb
updated seeds so that events are private and important
added test for rooms list view
Altered the position of the 'Important' display
Merge branch 'Elch' into E/feature/#100
Updated links from events approval to rooms