Summary: Add a little hack to skip the new Django 1.7 migrations

when running with settings_sqlitetest to speed up the process
 - Legacy-Id: 9076

ietf/settings_sqlitetest.py

@@ -1,5 +1,6 @@
-# Standard settings except we use SQLite, this is useful for speeding
-# up tests that depend on the test database, try for instance:
+# Standard settings except we use SQLite and skip migrations, this is
+# useful for speeding up tests that depend on the test database, try
+# for instance:
 #
 #   ./manage.py test --settings=settings_sqlitetest doc.ChangeStateTestCase
 #
@@ -12,3 +13,12 @@ DATABASES = {
         'ENGINE': 'django.db.backends.sqlite3',
         },
     }
+
+class DisableMigrations(object):
+    def __contains__(self, item):
+        return True
+ 
+    def __getitem__(self, item):
+        return "notmigrations"
+ 
+MIGRATION_MODULES = DisableMigrations()