PEP8 fix
Correct gateway URL in promotions fixture
Make path to font awesome absolute to make it more robust
Make jquery CDN work with http & https
Pin django-haystack dependency

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

Fixes #479
Add the git protocol to the django-haystack dependency link

Without it, it is a malformed VCS url
Remove call of missing checkout init function
Merge pull request #489 from tangentlabs/issue/488/django-haystack-dependency

Add the git protocol to the django-haystack dependency link
Add migration help to customise models docs
Docs: Remove duplicate OSCAR_IMAGE_FOLDER entry
Merge pull request #493 from maikhoepfel/mh/fixdocs

Docs: Remove duplicate OSCAR_IMAGE_FOLDER entry
Add note to docs for customising classes of products.
Improve sandbox installation process

* Remove profiling middleware from default setup
* Document dependency on libjpeg
Adjust post-user-create receiver to check database state

Need to avoid situation where this signal gets raised by syncdb and the
database isn't in the correct state.

Fixes #475
Document dependency on compressor in default templates

See https://groups.google.com/forum/#!topic/django-oscar/-F1rEUX-RZA
Update installation doc

* Use `code-block` to see if that renders differently
Merge remote-tracking branch 'upstream/master'