Downconverter: add caching to avoid regenerating from unchanged input
don't stop processing when augmenting fails

move on to the next batch instead
Combiner: add Viva/ComedyCentral
ORF: don't parse from undef string
MTVde: ignore "CC goes here" programmes on Viva
Merge branch 'master' of https://github.com/dekarl/nonametv

Conflicts:
	lib/NonameTV/Importer/Combiner.pm
	lib/NonameTV/Importer/MTVde.pm
	lib/NonameTV/Importer/ORF_xml.pm
Use tmdb id instead
New channels