Conflicts:
- `app/models/account.rb`:
Upstream added new validations close to lines on which glitch-soc had
modified validations to handle custom limits set through environment
variables.
Ported upstream changes.
- `config/initializers/content_security_policy.rb`:
Upstream added `AZURE_ALIAS_HOST`. Glitch-soc's version of the file is
completely different.
Added `AZURE_ALIAS_HOST` to our version of the file.
