fixed mediacover images not being returned.

autocomplete now shows 20 results instead of 8

NzbDrone.Api/Frontend/StaticResourceMapper.cs

@@ -1,3 +1,4 @@
+using System;
 using System.IO;
 using System.Linq;
 using NzbDrone.Common;
@@ -30,6 +31,11 @@ namespace NzbDrone.Api.Frontend
                 return false;
             }
 
+            if (resourceUrl.StartsWith("/mediacover", StringComparison.CurrentCultureIgnoreCase))
+            {
+                return false;
+            }
+
             return Extensions.Any(resourceUrl.EndsWith);
         }
     }