Fix test dependencies:

* made django-reversion fixed to 1.6.6, otherwise it would download 1.7.1 which doesn't work with django 1.4
* added missing test requrements: djangocms-text-ckeditor, djangocms-column, djangocms-style
Fix whitespace issue
Merge pull request #2088 from yakky/feature/fix_setup_test

Fix setup.py test dependencies