fixed bugs/comment from PR 26
fixed out of index problems in queue
added unit tests for queue
Update player-provider.js
Update player-provider.js
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
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
reverse changes to playlist test data
only register to event songs if event hasn't ended
create new events now during the test
corrected test naming removed system tests