Merge pull request #238 from fukawi2/master

typo in requirements
Issue #239: db_backup now supports passwords
Merge pull request #243 from delfick/passwords

Issue #239: db_backup now supports passwords
Fixing password resets
Make the default email address to send from configurable
Including celery for background processing
Require the django-celery integration
Adding the celery framework
Adding ability to send regular emails about the change queue. Fixes #49
Hide the celery scehduler DB