fix bug with anon users
Merge pull request #29 from songster-project/bugfix/anon_user

fix bug with anon users
fixed error in event_songs websocket
corrected bug in event songs
added database and notification client for tests
added test data and tests for event songs
correct tests
Merge branch 'bugfix/websocket_example' of github.com:songster-project/songster into bugfix/websocket_example