anonymous username set as guid
disabled login for anonymous user via formular
checking against multiple votes at post route in backend
and deny it
disable karma crap and enable grunt watch
set vote state to played when song is played
fixed bug of when creating a new anonymous user
Revert "disable karma crap and enable grunt watch"

This reverts commit ec9cbe7905bc44890283cb2d92dc8ff94f58cbbe.
removed done todo
fixed updating multiple votes states to played
fixed showing eventlog to anonymous users too
fixed redirecting to voting/event when event is not active for the event history
logging error message as discussed with patrick
Merge pull request #39 from songster-project/feature/song_revote

Feature/song revote