add AUTH_PROFILE_MODULE

so get_profile() method works on User objects.
starting to make index views static

both because holding the entire index in the browser is a terrible idea, and to make reuse easier.
static question index!

Using django_tables2. It provides a load of good stuff, but it takes a bit of work to get it to do what you want.
There is now a QuestionSearchForm, which I should use to do question searches, for reusability.
add missing file
QuestionSearchView subclasses QuestionListView

so there's only one question-searching method
filter by tags; links to profiles

Question index can now be filtered by tags.
Author column now links to author's profile page.
Tags on profile page link to index of questions with that tag.
Can now use j/k to move through index pages, and / or ? to focus the search box.
placeholder text on search boxes; submit when progress filter changed
autocomplete user search
static index for exams, too
search on tags in exam question list; tags clickable on question edit
add django_tables2 to INSTALLED_APPS