Added placeholder mturk_handler().
Added MTurk view.
Removed MTurk handler from "normal" views.
Fixed usage of url for Django 1.5.
Added MTurk views in separate file, starting with support for ranking tasks.
Only randomise item order if explicitly allowed in task object. This needs to be propagated to normal tasks as well.
Added dedicated MTurk templates which are somewhat lighter.
Tweaked CSS to minimise template footprint.
Added basic MTurk URL.
Started adding stuff for WMT13 version of Appraise.
Fixed __unicode__() methods and added new User/HIT mapping helper class.
Added method to get next HIT for user/language_pair combination.