Altis Workflow Framework solution

- [ ] [WF Framework: Allow configurability of new statuses](https://github.com/humanmade/altis-workflow/issues/50)
~- [ ] [WF Framework: Create a machine readable format of the WP state machine](https://github.com/humanmade/altis-workflow/issues/48)~
~- [ ] [WF Framework: Integrate the JSON/SCXML output of the state machine with Altis config file](https://github.com/humanmade/altis-workflow/issues/49)~
~- [ ] [WP Framework: Ensure backward compatibility of new post statuses](https://github.com/humanmade/altis-workflow/issues/53)~
- [ ] [WF Framework: Allow status configurability of non-content object types](https://github.com/humanmade/altis-workflow/issues/52)
- [ ] [WF Feature: Providing custom statuses Out of the Box](https://github.com/humanmade/altis-workflow/issues/51)
- [ ] [Rename existing Workflows feature to (say) Editorial Notifications](https://github.com/humanmade/altis-workflow/issues/45)
- [ ] [Create a 'Back to Draft' state of a published post](https://github.com/humanmade/altis-workflow/issues/42)