Fixed: Disable caching of iCal

src/NzbDrone.Api/Frontend/IsCacheableSpecification.cs

@@ -23,6 +23,7 @@ namespace NzbDrone.Api.Frontend
             if (context.Request.Path.StartsWith("/api", StringComparison.CurrentCultureIgnoreCase)) return false;
             if (context.Request.Path.StartsWith("/signalr", StringComparison.CurrentCultureIgnoreCase)) return false;
             if (context.Request.Path.EndsWith("main.js")) return false;
+            if (context.Request.Path.StartsWith("/feed", StringComparison.CurrentCultureIgnoreCase)) return false;
 
             if (context.Request.Path.StartsWith("/log", StringComparison.CurrentCultureIgnoreCase) &&
                 context.Request.Path.EndsWith(".txt", StringComparison.CurrentCultureIgnoreCase))