* Allow to show a specific status in the admin interface
* Let the front-end know the current account is a moderator
* Add admin links to status and account menus
If the current logged-in user is an admin, add quick links to the admin
interface in account and toot dropdown menu. Suggestion by @ashkitten
* Use @statuses.first instead of @statuses[0]
* Add moderator role and add pundit policies for admin actions
* Add rake task for turning user into mod and revoking it again
* Fix handling of unauthorized exception
* Deliver new report e-mails to staff, not just admins
* Add promote/demote to admin UI, hide some actions conditionally
* Fix unused i18n
ThibG