Let database set the value for revised on publish. Fixes #22
Merge pull request #29 from Connexions/issue-22

Let database set the value for revised on publish. Fixes #22
Test case for publishing a revision. Depends on #17
Fix a defective test.
Adjust use-case expectations to include a republish.
Correction for the REVISED_BOOK use case test.
Optionally assign the moduleid on metadata insertion. Addresses #17
Remove test expectation line, because binders to not auto-republish for contemporary publications.