- Remove outdated material relating to old versions of Django
- State that Oscar assumes that the email field is unique
- Update a number of links to Django documentation.
- Minor fixes to other bits of documentation.
my_model_customisations_arent_picked_up now lives in a subsection of the
recipe how_to_customise_models.
The old conventions.rst is now merged into the new coding-style.rst.
The old search.rst has been dropped as it seems outdated.