History and various YouTube fixes

* Cuts the show title from shows where the first seperator seperates the
show title and track (e.g. http://www.youtube.com/watch?v=MwSkC85TDgY)
* Strips [whatever] from artist
* Strips (Lyric) from title

Keeps a history of manually submitted tracks when the automagic identification fails. Only saves the track to history when the user enters a valid track in the popup and only lockups in history if the initial validation fails.

Please note that this is based upon the assumption that the URL changes with the track, which is the case for YouTube but most likely not the case for other connectors. For this to work in all connectors, the connector should send a unique ID to the scrobbler for each track and the scrobbler should save, and do the lockup, on that ID. The popup would also need to work on that ID instead of active tab's URL.