According to the elementtree spec, elements with no children test as false. We only want to skip checking for module ids if the module is actually not found

Add enrollment link back to main page for development purposes, until we...

Courseware module rewrite

* Change looping code style in seq_module
* Clone and keep the latest version of jasmine-jquery locally
* Use django-pipeline asset tags

This will handle the case where the site was deployed under a
path prefix.

Pmitros/modular refactor

Update requirement dependencies

* Make sure we're installing django-pipeline from our fork
* Bump rake to 0.9.2.2, as 0.8.3 is already outdated.

Add enrollment link back to main page for development purposes, until we have the multicourse enrollment stuff worked out

Exclude things during .deb packaging correctly, so that we don't have a bunch of build detritus left over. FPM still leaves the empty directories, unfortunately