merge latest develop (#230)

* sync guids/provider ids (#227)

* sync guids from plex

* cleanup

* sync local guids

* sync jellyfin and emby guids

* add episodes to search index (#228)

* sync episode directors and writers

* display episode writers and directors

* remove missing episodes from search index

* show episodes in search results

* fix emby and jellyfin episode updates

* fix updating plex episodes

* don't delete channel logos on startup

* add episodes page; fix adding episodes to collection

* cleanup

* multi-part episode grouping fixes (#229)

ErsatzTV.Core/Interfaces/Plex/IPlexServerApiClient.cs

@@ -1,4 +1,5 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 using System.Threading.Tasks;
 using ErsatzTV.Core.Domain;
 using ErsatzTV.Core.Plex;
@@ -46,7 +47,14 @@ namespace ErsatzTV.Core.Interfaces.Plex
             PlexConnection connection,
             PlexServerAuthToken token);
 
-        Task<Either<BaseError, MediaVersion>> GetStatistics(
+        Task<Either<BaseError, Tuple<MovieMetadata, MediaVersion>>> GetMovieMetadataAndStatistics(
+            PlexLibrary library,
+            string key,
+            PlexConnection connection,
+            PlexServerAuthToken token);
+
+        Task<Either<BaseError, Tuple<EpisodeMetadata, MediaVersion>>> GetEpisodeMetadataAndStatistics(
+            PlexLibrary library,
             string key,
             PlexConnection connection,
             PlexServerAuthToken token);