Cabot

--------------

*** BROKEN RELEASE - MIGRATIONS DON'T WORK CORRECTLY ***

* Jenkins support:
- Fail Jenkins checks when job is unknown
- Use [jenkinsapi](https://pypi.python.org/pypi/jenkinsapi) to talk to Jenkins
- Add option to specify multiple Jenkins backends
> NOTE: This update will delete any recent status check results for jenkins checks
* Add view for public services
* Add support for Google OAuth login
* Add ability to add custom check plugins
- See https://gitlab.com/as-public/cabot-check-skeleton for an example
* Remove deprecated Fabfile and Shell scripts

--------------

* Update slack alert to 0.8.1
- fixes names not linking
- only shows the acknowledge button if "SLACK_INTERACTIVE_MESSAGES" is set
- (The feature only works if set up correctly on the slack end)
* Update to django 1.11 (with working django-polymorphic this time)

--------------

* Update slack alert plugin
- Now shows an "acknowledge" button within slack
* Fix alert tests not triggering if:
- A user had acknowledged working on the service
- A legitimate alert had been sent recently
* Add support for GitHub OAuth logins
- See http://cabotapp.com/use/users.html

--------------

* Fix plugin urls being overridden by plugin settings urls
- This fixes e.g. the twilio callback url not working
* Fix profile settings sidebar links not working

--------------

* Fix bug which caused status graphs to sometimes not render
* Fix issue with complex recurring calendar - `'vDDDLists' object is not iterable`
* Fix css regression in logo/title

--------------

* Fix basic auth passwords getting reset when editing checks
* Fix plugin alert tests alerting the current duty officer
- They should now always alert only the user that runs the test