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* Bump rake to 0.9.2.2, as 0.8.3 is already outdated.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

Use a key function that is safe for use w/ memcache

This is needed for the asset-pipeline. The pipeline has to map a requested asset name ('css/application.css') to a string that encodes the file contents ('css/application.12323423abcf.css'). It caches these associations in memcache. We have the potential for filenames with spaces in them, which memcache can't handle, so we need to escape the cache keys in such a way that memcache can handle them.

It puts these in a cache named 'staticfiles' (http://django-staticfiles.readthedocs.org/en/latest/helpers/#cachedstaticfilesstorage). In the future, it may make sense to put that cache onto the filesystem, rather than memcache, but we should do that only after performance testing.