Merge branch 'release/3.13.3' into develop
Help debugging “the” settings import exception, that Django makes a pain to understand.
Additions for Ubuntu 14.04.
Make a message more generic, we now support Debian.
Debug a little the PG process, it's a pain to know what's not working on Debian.
version bump for 3.13.4
Merge branch 'release/3.13.4'