Added mp3 streaming for songs and a player to the app (experimental)
Merge branch 'develop' of https://github.com/Vocaluxe/Vocaluxe into develop
[Server] Allow multiple sessions with one user
[Server] Invalidate session after a timeout
[Server] More audio formats for streaming
Merge pull request #130 from lukeIam/develop

[Server] multiple logins per user + mp3 stream