Add psycopg2cffi compatibility hook to base settings.
Add psycopg2cffi compatibility hook to base settings.

jamesfoley/cms,jamesfoley/cms,dan-gamble/cms,lewiscollard/cms,danielsamuels/cms,danielsamuels/cms,lewiscollard/cms,dan-gamble/cms,danielsamuels/cms,dan-gamble/cms,jamesfoley/cms,lewiscollard/cms,jamesfoley/cms