add vitheque.com
Merge pull request #92 from karjonas/master

 BUG: Kanal5play.pm did not iterate all video streams
Merge pull request #90 from bit/master

add vitheque.com support
Merge pull request #91 from matthewbauer/master

misc fixes, check all plugins for can_handle method
Merge branch 'master' of git://github.com/monsieurvideo/get-flash-videos