The name of projects on readthedocs should have dashes, and not underscores. Their server was not redirecting properly from the / URL to the en/latest URL (a problem they will address later). So, the user manual was renamed from kotti_user_manual to kotti-user-manual, and rebuilt, and our links updated.
Merge pull request #223 from geojeff/user_manual_link

The name of projects on readthedocs should have dashes, and not undersco...
Fix XML validation errors.
Remove the html5shim from the master templates and use the fanstatic package js.html5shiv instead.