Faster is better!

* Use correct directives in signals.rst
* Removed newline in glossary.rst that broke sorting of glossary terms
* Removed syntax warning for upgrading.rst

All credit for those findings goes to Dawid Lorenz.

includes django.core.context_processors.tz.

Only search_default needed correcting.

When you use the notation with slashes, use full path to file.
With dots, enter module name. Commands run with the current test set.

- Add new block for payment tab
- Rename transactions block
- Provide transactions in get_context_data
- Better handling of empty iterables

is_highlighted is now an integer and works similar to the common
"ordering" fields. The higher the number, the higher the country will be
moved up in the list.

Fixes #720, #725

Filenames can easily get longer than 100 characters, and that causes
Django to fail hard (I think with a DatabaseError), because it's
currently not validated (see Django #11027)

This fix increases the character limit to 255 chars. Going much higer
can cause trouble with MySQL.

Fixes #625. Thanks for reporting go to @soloweb.

To be consistent with the rest of Oscar.

Some of them are rather basic, but it's a start.

Fixes #709

Fixes #697

Test suite time has halved.

This makes more sense than keeping it as a method.

Hattip to @BuddhaOhneHals for doing this in the first place.
Unfortunately, I couldn't (be bothered to) merge the original commit as
the merge conflicts were too painful to resolve - simpler to just
reapply the same change myself.

Fixes #466

Fixes #495

* Better wordings for the individual steps
* Mentioned necessary copying of migrations directory
* Fixed wrong prerequisites in examples
* Glossary typo fixed

Commonly used terms should be explained there.

- Added stubs for both apps
- Switched to using :automodule: for abstract models instead of
  individual :autoclass:
- Added instructions on creating a Partner and ProductClass instance
  when setting up a new Oscar instance

The mailing list raised the issue of having to include the models.py to
replace a Form. The docs weren't clear, so I've taken the opportunity
to:

* merge 'INSTALLED_APPS' section and 'models.py & admin.py'.
* change misc wordings and add clarifications

Update release notes too.

The parameters have been changed to use request, not request.basket.

Fixes #574