update install script to take into account new config location
more DRY code. also use "with" instead of try/except
remove hard-coded string
stricter error checking when adding to queues
more persistent links (won't be invalid if title changes)
fix playout not working

-silly mistake due to inf recursion
remove unecessary backslashes
fix reference to non-existent var
Merge branch 'master' of git://github.com/sourcefabric/Airtime

Conflicts:
	airtime_mvc/public/js/airtime/preferences/streamsetting.js
Fixed typo in tooltip