Upgrade the selenium-webdriver gem to 2.37
Fix user endpoint to allow update of a user's properties (if a repo_id is present)
Allow addition/removal of a user's repo groups via the /user/:id POST endpoint
Fix selenium tests that were breaking after upgrading the selenium-webdriver
Merge pull request #597 from hudmol/bug-update-user

[Delivers #60918200] User update does not work