Merge branch 'develop' of github.com:wf4ever/ro-manager
Merge branch 'develop' to 'master'.

This includes the initial running "Overlay RO" service, and
refactoring of HTTP session code.  It also includes mkminim facility for converting
spreadsheet-based checklist descriptions to Minim models.
Merge branch 'develop' - V0.2.15
Merge branch 'develop' for version 0.2.16
Merge branch 'develop' for v0.2.17 release
Bring updated OwlDoc over from develop branch
Tweak documentation and release notes
Tweak roverlay documentation
Add walkthrough example to roverlay documentation.
Regenerate OwlDoc for Minim (using minim-revised ontology)
Add project copyright and licencing information.
Tweak documentation and release notes
Tweak git-incantations.md
Add README and installation notes for roweb checklist service
Expand README for checklist service
Merge branch 'master' of github.com:wf4ever/ro-manager
Minor tweak
Fixing typo caused test case failure.  Revert.
All tests pass.  Update revision history.
Resolve merge conflicts between develop and master branches