Add event emitter

Push RoomDeleted event when creator delets it.
React to RoomDeleted event in RoomList.
4 jobs for event-emitter in 6 minutes and 47 seconds (queued for 4 seconds)
latest
Status Job ID Name Coverage
  Codestyle
passed #151847
nodejs
tslint

00:01:59

 
  Test
passed #151848
nodejs
unit_tests

00:01:48

 
  Build
passed #151849
angular
ngbuild

00:02:42

 
  Deploy
passed #151850
git allowed to fail
sync_mirror

00:00:18