If nextSetup is true, use playNext regardless

If nextSetup is true, then the media player has already called setNextMediaPlayer.  Since this is already inside of the onCompletion, there is a pretty good chance that the next media player is already playing.  In this case we can't risk going into the condition where the current media player will be restarted.
Lower wakelock time to hopefully improve on active battery usage
Dsub 4.7.4 Released
Fixed typo in latest changelog, removed old versions (get from TAG descriptions)
Merge branch 'master' of https://github.com/daneren2005/Subsonic into CacheUpdate