Prevent direct visit of oauth URLs
Though the menu item was hidden for the "developer dashboard", the page/routes were still active. This adds a check to the Doorkeepers config, which gets included for all OAuth related pages to run the same check.
Show oauth application link in nav but disabled
Show username that is logged-in to api.fablabs.io (because page has no main menu)
api.fablabs.io(because page has no main menu)