loaded into the page in a data attribute instead of loaded on request via ajax.
The user profile page also does not provide facilities for adding
comments/responses, which I think would clutter the page too much.

Also removed some unused stuff from views.py.

Backbone.Model attributes because Model attributes get serialized into
JSON which is wasteful.

This just puts them in three traversal order rather than chronological order.
Not sure which makes the most sense, but I'll implement both ways.

down on the amount of data shuffled around and saves some rendering time
on the forum index as well.

used anywhere anyway.

I don't know why this was ever defined when python has a ternary operator
which doesn't require its arguments to be evaluated if the condition
evaluates to false, whereas this helper method does.

This reverts commit 6ee6e1c6.

Related templates should probably also be deleted. I did this mainly
because it's confusing to have so many functions with similar names and
there's a lot of unused stuff from discussion v1.

Suppress underscore errors when not on the right page. Ideally page specific JS execution would take care of this.

It worked in Chrome because Chrome appears to magically infer some missing
arguments to methods. This is the second time this happened, should be more
careful about it in the future, because it causes confusion when features
work for some students but not others.