MP1-4151 : Fix TVPlugin refresh empty thumb.
MP1-4151 : Fix refresh IconImage when Thumbnail is not yet available. (GUIPictures)
MP1-4151 : Fix refresh DefaultIcon for TV.
MP1-4157 : Fix 'System.OutOfMemoryException' when using Image.FromFile / ImageFast.FromFile.
Merge remote-tracking branch 'remotes/upstream/MP1-4151-BUG-Thumbnail_fix_CPU_Usage_when_stay_in_list_view_when_doing_nothing' into 1.5.0Fork
Merge remote-tracking branch 'remotes/upstream/MP1-4157-BUG-Fix_System.OutOfMemoryException_when_Generated_Thumbnail' into 1.5.0Fork

Conflicts:
	TvEngine3/TVLibrary/TvThumbnails/VideoThumbCreator/VideoThumbCreator.cs