Update test matrix. Remove Django 1.7 and only test against the latest version of Django. Remove Python 3.3 and 3.4, add Python 3.5.
Update test matrix. Remove Django 1.7 and only test against the latest version of Django. Remove Python 3.3 and 3.4, add Python 3.5.

jamesfoley/cms,jamesfoley/cms,dan-gamble/cms,jamesfoley/cms,dan-gamble/cms,dan-gamble/cms,jamesfoley/cms