Added new plugin for local fanart based on MediaItem paths
Added new Fanart plugin for TMDB cache access to avoid introducing backend references on client
Removed ThumbnailAspects from Default skin, all loaded via FanArtImageSource now
Extended fanart types
Added ImageSourceFactory to allow plugins to add support for new sources.
Removed FanartImageSources for normal MediaItems (now supported mapping in server side providers)
Changed fanart providers to return IResourceLocators instead of strings, so FanArtModule is able to access other resources too (i.e. NetworkRA)
Added different list sizes, disable loading of thumbs for SlimTv
Removed ThumbnailSmallAspect, one large(r) thumb is enough