handle_admin_role doesn't work with basic auth

[danielmoore]

It really shouldn't work at all.. CouchDB should stop executing auth handlers once the user_ctx is set and handle_admin_role relies on user_ctx being set beforehand.

We probably should switch this to a wrapped implementation where handle_admin_role wraps whatever auth handlers the administrator specifies. In some ways this would be more flexible.

[danielmoore]

There seems to be an issue with how CouchDB parses out the "SpecArg" in an auth handler triple. This may require a workaround to deal with... Using another config option seems fairly obvious, but there's a good amount of code necessary to deal with loading it up, parsing it, and re-parsing it if it ever changes.