Add make target for compiling demo CSS
Use make target in update_demo script
Correct media path in nginx config
Merge pull request #637 from informa/issue/557/demo

Browse.html styling
Bump dependency on oscar-testsupport
Clear sorl data when updating demo site
Add new superuser fixture for public demo site

With a private password this time.
Add offers fixture for demo site
detail page layout
Merge branch 'issue/557/demo' of https://github.com/tangentlabs/django-oscar into issue/557/demo
styling/markup for detail.html(added varients) and basket.html, now using the same js for all carousels, added markup for possible widgets, added checkout navigation, tidied some less(more needed around buttons, navbar)