edx/edx-platform — pull request #3628 by nedbat (2014-05-06 22:04:13+00:00)
Title: IGNORABLE_404_ENDS is wrong and unused

This setting is only used if SEND_BROKEN_LINK_EMAILS is true, which it
is not, and it is deprecated, and this value for it is wrong, since it
is used as an iterable.