#145 - add compatibility layer for importing users

wiki/core/compat.py

+"""Abstraction layer to deal with Django related changes in order to keep
+compatibility with several Django versions simultaneously."""
+from django import VERSION as DJANGO_VERSION
+
+def get_user_model():
+    
+    if DJANGO_VERSION >= (1,5):
+        from django.contrib.auth import get_user_model as gum
+        return gum()
+    else:
+        from django.contrib.auth.models import User
+        return User