Updated CONTRIBUTORS file
Minor formatting fixes.
Merge pull request #57 from toanant/patch-2

Minor formatting fixes.
Made PDT use PAYPAL_TEST not PAYPAL_DEBUG determine sandbox mode, consistent with others
Cleaned up some test code that did nothing
Merge branch 'master' of github.com:spookylukey/django-paypal
New field mp_id for tracking billing agreements (IPN and PDT)
Fixed helper manage.py to work with Django >= 1.7
Added initial South migrations for pro app
Moved README into Sphinx docs
Fixed manage.py for Django >= 1.7
Fixed corrupted backwards migration
Docs about updating the DB
Got PDT tests working
Removed non-functioning PDT signals
Migrated from IPAddressField to GenericIPAddressField
Entries in change log
Corrected docs about upgrading to Django 1.7
Bumped to version 1.4.0
Fixed setup.py long_description to include new docs URL