* Implement simple team-based registration
Config required goes in the `teams` top-level property in config.json. This consists of an array of team objects:
```json
{
"name": "University of Bath",
"emailSuffix": "bath.ac.uk"
}
```
These can be selected on registration and require a user to have a certain email address in order to register as part of a team. This is for vector-im/riot-web#2940. The next step would be sending users with emails matching the emailSuffix of a team to the correct welcome page as in vector-im/riot-web#2430.
Luke Barnard
5ef5204c8c