update librelist for django 1.6

[pravi]

I'm trying to setup librelist locally, hoping to package it for debian but I get this error.

https://stackoverflow.com/questions/20906305/import-error-cannot-import-name-execute-manager-in-windows-environment

debian already has django 1.6. I will try to fix it myself but someone who knows django well would be able to fix it faster.