Hard coded request.META values for RegistryUserBackend

The RegistryUserBackend looks for request.META['mail'] and
request.META['Shib-Identity-Provider'] to add some basic data to the
newly created user. Hard-coded values into the BasicAuthMockMiddleware
object to get past the backend when a new user is entered. Needed to
add a test group fixture.
Merge branch 'master' of github.com:mredar/avram
Modified html whitespace to be consistently two soft tabs
Broke the collection_list out of the base template, added about template
Ordering campus facet list by name for now, and added rudimentary x button to remove facet. Will style these better later.
Added Chosen.js for dealing with select multiple drop downs
Added collection edit page
Apparently didn't catch collection_edit.html on my last commit.
Merge pull request #16 from amywieliczka/master

Added edit collection form, added about page, modified campus facet listing