edx/edx-platform — pull request #1700 by cpennington (2013-11-18 21:18:46+00:00)
Title: Move xmodule_runtime.xmodule_instance registration earlier.

This allows XModules (specifically CombinedOpenEnded) to use ajax_url
during their __init__ functions (which would, before, have thrown an
excpetion).

[LMS-1493]