Update requirements and remove dep. on feta cheeseshop

Requirements updated with new versions of many packages, and django-versioned
removed because it doesn't exist on PyPI.
Update package.json and bower.json for BS3
First-pass fixup of templates/styles for BS3
Update Vagrant file to work with newest vagrant
Size the summary action column appropriately
Fix summary page header
Fix overflow of SSH command on small displays
Fix summary action buttons