Quite a lot of little fixes and data views should now work

- Fixed the tutorial link in the dashboard
- Made the enketo.org link open in a new window
- Fixed the JS for the data view
- Fixed the loading box
- Added the js block to the base.html so the js is included correctly
- Fixed a little error so TESTING_MODE doesn't need to be in settings.py
- Started fixing the requirements files.
-- The version of Pillow has an error with MAC
-- We still need celery even if is deprecated