increment tvdb image provider version

MediaBrowser.Providers/TV/RemoteSeriesProvider.cs

@@ -243,6 +243,8 @@ namespace MediaBrowser.Providers.TV
 
                 if (!series.LockedFields.Contains(MetadataFields.Cast))
                 {
+                    series.People.Clear();
+
                     FetchActors(series, actorsXmlPath, cancellationToken);
                 }
             }
@@ -758,6 +760,8 @@ namespace MediaBrowser.Providers.TV
                 }
             }
 
+            personInfo.Type = PersonType.Actor;
+
             if (!string.IsNullOrEmpty(personInfo.Name))
             {
                 series.AddPerson(personInfo);

MediaBrowser.Providers/TV/TvdbPersonImageProvider.cs

@@ -27,6 +27,30 @@ namespace MediaBrowser.Providers.TV
             _providerManager = providerManager;
         }
 
+        protected override bool RefreshOnVersionChange
+        {
+            get
+            {
+                return true;
+            }
+        }
+
+        protected override string ProviderVersion
+        {
+            get
+            {
+                return "2";
+            }
+        }
+
+        public override bool RequiresInternet
+        {
+            get
+            {
+                return true;
+            }
+        }
+
         public override bool Supports(BaseItem item)
         {
             return item is Person;