small html fix | db migrate
Converted test to RSpec
Correct removal of reference in migration
Update config.yml
clean up for heroku & room seeds
fix room update
Merge origin/dev into dev
fix tests
Merge branch 'c/toresolve' into dev
fix room model
Merge branch 'dev' of https://github.com/hpi-swt2/event-und-raumplanung into dev
Saves lifetime for everyone and page loading is accelerated to ~2s
Merge branch 'dev' into Clownfish

Conflicts:
	db/schema.rb
db schema update
fix date use in room view
test pending
merged new dev into Elch