Suggested in #449.

This uses the unidecode package to convert non-ASCII words to ASCII
equivalents.  We use a new slugify function to wrap this logic as we
will want to use it elsewhere.

See this StackOverflow thread for context:
http://stackoverflow.com/questions/702337/how-to-make-django-slugify-work-properly-with-unicode-strings/

Unidecode becomes a new dependency for Oscar.
https://pypi.python.org/pypi/Unidecode

Hat-tip to @avsazonov for suggesting this fix.

Hopefully this is useful and not annoying.

Without it, it is a malformed VCS url

The HEAD of django-haystack master is currently broken, which highlights
the dangers of linking to a moving target.

Fixes #479

Was reading the guide to python packaging:
http://www.scotttorborg.com/python-packaging/

This involves some changes to the template block structure to make it
easy to compress the correct files.

* A new block cdn_scripts has been introduced as CDN-loaded scripts
  can't be compressed.
* A new setting 'USE_LESS' controls whether to use the LESS-generated
  files or the compressed files (which will need to be generated
  manually as they aren't in source control).
* A fallback for jQuery UI is added
* The CSS block was renamed to be clearer
* The bootstrap CSS was brought out of the LESS file into the page.
  This makes it easier to compress.

Have dropped dependency and started using a rewritten version of the
django-sorting templatetag.  Changes:

* Simplified logic
* Stripped out unwanted functionality
* Added support for i18n (several pull requests have been open on the
  original library for this, and not merge for many months).

Fixes an issue in django-oscar-stores.  The bump is
backwards-compatible according to @andrewingram.

os.chdir does not like empty strings...

* Remove accidentally commmitted module code
* Adjust gitignore files
* Add MakeFile target for pulling down puppet modules
* Add settings file for MySQL/Postgres

Thanks Patryk for the tip.

* replaces all occurences of ``datetime.now()`` with
    ``django.utils.timezone.now()`` which returns aware or naive
    datetimes based on ``USE_TZ``
* increases ``South`` version to 0.7.6 in dependencies to make
    aware datetimes work in migrations.
* Oscar's sandbox is now configured to use aware timezones by
    default

This is needed for internal Tangent projects.  The search app in oscar
still needs some work but it works in a very basic fashion at the
moment.

The template for search results still needs attention.