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Merge pull request #6 from PetrovSE/webcast

Webcast
add caching around URI evaluation in InfoLabels_IsInternetStream() to save cycles on lower-end platforms
get rid of self.tn.get_socket()
housekeeping
Merge pull request #7 from PetrovSE/bigclock

Use XBMC system time instead python's local time
make time retrieval a bit more compact, refactor abit to not need finishing else