edx/edx-platform — pull request #1673 by cpennington (2013-11-14 17:01:33+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]