Adding mandrill support
- 500 errors are sent via mail (check if works also with DEBUG=True, it should not)
- Notification to SU on new task (once a day)
- Notification to Account (money/etc)

Adding support to MC webhooks (to be tested when on server)
Merge branch 'CrowdKitchenIntegration' of https://github.com/CrowdCafe/crowdcafe into develop

Conflicts:
	CrowdCafe/settings_common.py
	CrowdCafe/settings_sensitive_blank.py
	account/views.py