Kuma - permissions

Copying over Janet's comment from bug 913472: > Based on this discussion > (https://groups.google.com/forum/#!topic/mozilla.mdn.drivers/TA79fWQ7Ifo), > provide support for a model of roles and permissions similar to the > following: > > * Anonymous (not logged in) > ** read pages > ** launch demos > ** like demos > > * Authenticated (logged in) > ** create pages > ** edit pages and tags > ** move single pages > ** create demos > ** modify own demos > ** revert pages > > * Trusted user (trusted for potentially destructive actions) > ** delete pages > ** move multiple pages > ** edit templates > > * Admin (trusted to do anything) > ** ban users > ** change user roles > ** purge pages > > Note that we might eventually want multiple levels or types of non-admin > trusted users.

Ali: I think this should be converted to our new Idea -> Opportunity here. Once done we should close this bug. (The dependencies bugs are interesting to writhe the idea/opportunity proposal, though: I propose to keep this open until we made the submission).