Fixes #51 Puts a test page banner on the site

If you already have an installtion of the application, you will need
to alter your settings.php file to add the DEVELOPMENT constant.
If you are starting from scratch the constant is in the
example.settings.php file
Previous commit fails tests -- oops. This fixes code so that tests pass
Merge branch 'master' into 67-make-201-version

Conflicts:
	example.settings.php
	header.php

Fixes merge conflicts and removes a debug line introduced earlier