A bugfix and stability release.
- add width: auto for formatted-text img
- add OAUTH_LOGIN_PROVIDER_NAME and SAML_LOGIN_PROVIDER_NAME vars (allowing you to give a name to your login provider button)
- avoid sending empty catch up emails
- fix discussion_edited event so it shows the edit time correctly
- fix display of poll results for some cases in dot vote poll
- Update ReceviedEmailService#delete_old_emails to treat all emails the same
- fix an issue where voter anonymity could be revealed
- fix a problem where the poll results filter would reveal what someone voted for
- When a thread has an anonymous poll, hide the announcement viewed information