Create admin role and basic admin functionality #170
Description
derwok
Issue body actions
- Array of valid admin accounts can be listed in settings.json
- admin gets special role on app startup
- admin gets main menu entry with route
- admin functionality
- Register new users (see also Make REGISTER link configurable on login screen #169)
- De-activate users
- send/list/remove/re-send broadcast messages
Reactions are currently unavailable