Merge pull request #21 from songster-project/restapi/playlisttest

Restapi/playlisttest
login of unregistered user when going to /voting/:id
voting module created
menu and player will be hidden for anonymous user
the anonymous user now gets redirected again to anon if he enters again
small changes
passport protection for not-anonymous user
protect all the routes!!! + autoformat
deleted key of event, not needed anymore
fixed wrong labeling of preview/suggestion
fixed passport.js
accesskey no longer requiered
link to event is shown
fix for redirectVoting wrong name
addedn TODO for later specification
removed unused variable assignment
clearified todo statement
added anon user to the import user
Merge pull request #24 from songster-project/feature/anonymousUserEventPage

Feature/anonymous user event page
Create search REST endpoint
Add indexing of songs into elasticsearch
Add REST endpoint for song search [title, album, artist, year]