Bug 1060250 - [DLNA-player] Initial commit. 

This version implements:
              - ContentDirectory client
              - AVTransport client
              - ConnectionService client
              - Easy UI for local playing files

@schien  I can't trigger the servicelost when the server is shutted down. Reading `ssdp.js`, it seems that a `ssdp:byebye` message is required to trigger removal... did I miss something?