Refactor

As all points from the epic refactor issue are closed #47 (closed) I am merging this in to master in order to unblock development.

backend/core/admin.py

@@ -58,7 +58,7 @@ class UserAdmin(BaseUserAdmin):
     # The fields to be used in displaying the User model.
     # These override the definitions on the base UserAdmin
     # that reference specific fields on auth.User.
-    list_display = ('is_admin',)
+    list_display = ('username', 'is_admin',)
     list_filter = ('is_admin',)
     fieldsets = (
         (None, {'fields': ('password',)}),