Added IFanArtProvider, plugin builder, refactored movie/series loading into MDE projects
Added SlimTv resource provider for channel logos
Changed interface structure for providers
Added helper methods to replace invalid characters from filename or path
Using safe filename patterns
Added IFanArtProvider, plugin builder, refactored movie/series loading into MDE projects
Created new HttpModule

Removed UPnP service
Changed FanartImageSource to use plain urls (based on MultiImageSource)
Exposing AllocationChanged event
Fixed MultiImageSource async loading of urls
Deleted obsolete fanart UPnP classes
Added a "Cache" property to FanArtImage source to allow disabling of the ContentManager's caching (by URL)
Allow downloading for local URIs even if no other network is connected
Reduced log level for TextureAssetCore from Error to Warning