reciprocity/ggrc-core — pull request #2125 by Smotko (2014-12-30 16:23:44+00:00)
Title: CORE-882 WF Member should be able to reassign a task

If he is the assignee. The code used to check if the person is an assignee of a task or task group, but checking the assignee (contact) field of the cycle task might make more sense.