chore(controller): update South to 1.0.1

See http://south.readthedocs.org/en/latest/releasenotes/1.0.1.html
and https://bitbucket.org/andrewgodwin/south/commits/tag/1.0.1
Merge pull request #2430 from mboersma/update-south

chore(controller): update South to 1.0.1