include copy of django_extension, dont install django from git

contrib/django_extensions/docs/namespace_proposal.rst

@@ -0,0 +1,29 @@
+Namespace proposal
+==================
+
+:synopsis: Namespace Proposal
+
+
+Introduction
+------------
+
+Please change / write your proposal for splitting django_extensions into
+namespaces here.
+
+
+Proposal of a Namespace
+-----------------------
+
+Rough proposal for splitting into functional parts:
+
+* django_extensions.commands (20% that everbody uses / production)
+* django_extensions.commands.development (everything development)
+* django_extensions.commands.extra (not fitting about category's?)
+* django_extensions.db
+* django_extensions.templates
+* django_extensions.jobs
+
+The db part should be okey where it is right now. Cause it's only used when
+somebody explicitly imports::
+
+  from django_extensions.db.models import something