Allow users to create TEI document drafts and publish documents

[blms]

This issue tracks integration with FCC2 publish endpoint, draft/published/processing status.

dev notes

Note: Starting with 1.3.0-dev.2, we are deprecating ArchivEngine and requiring FairCopy Cloud 2 Beta as the backend for remote projects.

On the new dev build (1.3.0-dev.2), open or create a remote project hooked up to FairCopy Cloud 2.

• Check in some documents
• On the Remote view (clicking Home icon), you should see "Draft" and "Published" columns
• Checked-in documents should have a pencil icon under Draft. If they don't, click on the document and you should see a "Processing" indicator at the top.
• If they do have a pencil icon under Draft, clicking on the document should show a "Draft" indicator at the top.
• On a document that has a draft, there should be a Publish button that is enabled
• Click "Publish" and after a short wait, the "Draft" indicator should disappear, and you should either see a "Processing" or "Published" indicator appear. The Publish button should be disabled
• If it still says "Processing", navigate back to the remote documents list. Keep navigating back to the document until the processing indicator disappears—it should be replaced with a "Published" indicator eventually.
• Back on the remote documents list, the Published column should now have an icon in it for that document.
• Check out the document, make some changes, and check it back in
• You should now see both Draft and Published status on that document (or maybe Processing and Published while the draft is created)
• Again, the Publish button should be re-enabled, and pressing it should do the same thing as before, but this time Published should always remain on the document as it has been previously published.