mitocw/xsiftx — pull request #20 by bdero (2014-08-06 12:54:05+00:00)
Title: Fix broken sifters due to Opaque Keys 

@carsongee Python sifters updated
* content_statistics
* xqanalyze
* remote_grades

https://github.com/edx/edx-platform/wiki/Opaque-Keys-%28Locators%29