Merge pull request #2284 from fuzeman/tv_searcher

[TV][Searcher] TV searching, parsing and Release creation
fixed bug that was not storing xem maps in EpisodeLibrary.info
Merge branch 'tv' of https://github.com/RuudBurger/CouchPotatoServer into tv_xem
Merge pull request #2290 from nrgaway/tv_xem

Tv xem
Created 'searcher.try_download_result' event from section in MovieSearcher.single
Added TV release snatching/downloading
Renamed 'movie' -> 'media' in 'searcher.download'
Fixed IPT Show SD cat_ids
TV Searcher now supports xem scene mappings
IPT provider now searches in multiple categories.
'searcher.correct_release' can now return a float indicating the weight/accuracy which is used to scale the score. Fix to IPT _buildUrl method.
Chain result weight now returned from TV searcher correctRelease function.
Added 'searcher.get_media_searcher_id' event, Cleaned up some 'status.get' calls, Renamed some references of 'nzb' to 'rel'.
Implemented 'searcher.get_media_searcher_id' in the TV searcher.
Updated Caper library
Cleaned up status.get calls in TV searcher