dimagi/commcare-hq — pull request #5189 by nickpell (2014-12-31 23:15:19+00:00)
Title: Catch AttributeError

the observed ```AttributeError```s are from trying to delete a case property that matches the name of a property function defined in the class (http://logs.internal.dimagi.com:9000/commcare-hq-dev-team/hq-production/group/141762/)

Since overwriting a property function is not persistent, seems reasonable to just swallow the error. However, it does bring up the question as to whether there should be reserved case property keywords that users cannot assign to.