This also fixes up the OutputCaching params on the BackOfficeController since OutputCache is bypassed when an action requires authentication, so now we manually do some caching when not in debug mode for authorized actions (of course auth happens before any cached response can occur). This also fixes up the static caching that was happening with the ManifestBuilder so now when that is not in use it gives back it's memory. This also fixes up any client side caching that was happening on BackOfficeController - before we were allowing client cache to happen for a few actions on that controller which is incorrect, we need to disable all client cache for all actions on that controller.
