new utility script function

lists all logged in users (i.e. session hasn’t expired)
changed evaluation.get_results to return a queryset instead of an array

this will make it easier to implement a multipage evaluation form
template renaming
Template refactoring; multipage evaluation form

Separated out forms from other views; started breaking up the
evaluation form across many pages.
multipage evaluation form and test ID linking
added landing page; table sort; new manage page; export individual evalutions

* client-side tablesort added for all tables using jquery tablesorter
* manage page uses two tables: my evaluations, and all evaluations
* export data extended to support individual evaluations
* added landing page
Disallow robots on the dev branch
Added google analytics

Also removed copy_users script function (unrelated to analytics)
paige's design changes
Merge branch 'dev' of https://github.com/marisademeglio/epubtestweb into dev