TestURLs coverage for project app

[bemoody]

This adds test coverage for most of the URLs in the project app.

See the previous pull requests #1695, #1922, #2108 for background.

With this change, the bulk of site functionality should now be included in the TestURLs framework. A few small apps are left to add:

• oauth (should be easy)
• sso (should be easy but I'm not sure this is enabled in test configs)
• training (awaiting pull #1951)

And a number of URLs across the site are skipped due to a lack of fixture data:

• console
  • edit_submission
  • copyedit_submission
  • awaiting_authors
  • publish_submission
  • event_agreement_detail
  • event_agreement_delete
  • event_agreement_new_version
• project
  • serve_document
  • published_project_request_access
• search
  • redirect_challenge_project