tests Django 1.7 - easier way to handle app loading warning

This reverts commit aad6399f4104286263fb7b2d29bc8a6de97b3f41.
Resolving these errors: "RemovedInDjango19Warning:
  Model class tests.support.models.SimpleCommon doesn't declare an explicit app_label and
  either isn't in an application in INSTALLED_APPS or else was imported before its application was loaded."
fix " RemovedInDjango19Warning: Loading the `url` tag from the `future` library". Also do a little code cleanup.

This isn't pretty but you can't variable load template tags so use an entirely duplicate template file.