Ilrt.formalworkflow

- Added an adapted version of one_state_workflow to allow editors to add
and delete images and files. Since the default formalworkflow profile adds
formal_workflow to folders - blocking editor modification of unworkflowed types.

[Ed Crewe, ILRT - University of Bristol]

- Changed action names and templates to be less versioning orientated
Now uses Make changes, Accept changes and Cancel changes
- Fixed folder permissions checks blocking delete, copy and paste of objects
in published folders for editors
- Cleaned up permissions
- Removed unnecessary formalworkflow layer

[Ed Crewe, ILRT - University of Bristol]

- Released to pypi with some documentation

[Ed Crewe, ILRT - University of Bristol]

- Initial package structure.

[zopeskel]