tobami/codespeed — pull request #130 by alkino (2012-10-09 09:46:40+00:00)
Title: Fix postgre migration

Hi,
I'm sorry to open a new pull request but I use a new account.

This, last one fix the problem with sqlite.

I add "null=True" for the foreign key, I don't know if it's the good solution, but it works.