edx/edx-platform — pull request #3764 by adampalay (2014-05-16 20:12:34+00:00)
Title: make smaller queries when sending out bulk email (LMS-2718)

@ormsbee
@jarv
@symbolist

Limits the size of queries when generating items for subtasks

https://edx-wiki.atlassian.net/browse/LMS-2718