Temporary fix for django 1.8
Temporary fix for django 1.8

Use --no-migration-optimizer to run tests with Django 1.8 until a better fix is found.

qedsoftware/commcare-hq,dimagi/commcare-hq,dimagi/commcare-hq,qedsoftware/commcare-hq,dimagi/commcare-hq,dimagi/commcare-hq,qedsoftware/commcare-hq,qedsoftware/commcare-hq,qedsoftware/commcare-hq,dimagi/commcare-hq