Merge pull request #6099 from jtkech/patch-3

Invalidate image profile cache for images only

src/Orchard.Web/Modules/Orchard.MediaProcessing/Handlers/ImageProfilePartHandler.cs

@@ -14,6 +14,7 @@ namespace Orchard.MediaProcessing.Handlers {
         }
 
         protected override void Published(PublishContentContext context) {
+            if (context.ContentItem.Has<ImageProfilePart>())
                 _signals.Trigger("MediaProcessing_Published_" + context.ContentItem.As<ImageProfilePart>().Name);
             base.Published(context);
         }