For release 2.57

### For release 2.57

codjo-sandbox requests:
* Fix a deadlock          https://github.com/codjo/codjo-administration/pull/8
* New feature to add warnings to computed fields          https://github.com/codjo/codjo-broadcast/pull/8
* Passwords changed for test accounts             https://github.com/codjo/codjo-ads/pull/12