Islandora/islandora — pull request #319 by nigelgbanks (2013-04-19 14:36:09+00:00)
Title: Prevent inifite loop when a callbacks is the last step to be executed.

Fix's an error in my logic. Now instead of having a null step ID mean
that it is the first step. The step ID gets initialized when the
form is first build and NULL is changed to mean that all steps
have been executed.

Also added some comments.