Feature - improvement for demo site

## Feature - improvement for demo site

The demo site was hurried through at it's release, this pull request is a bit of a tidy up of the site. Oscar has also been updated since and an update of oscar's code has been added. Things I noticed were: New navigation in the accounts and wish lists.

Note: The home page elements were initially designed for fancypages and have not been implemented yet as some more changes to fancypages are due to come, therefore have been left for the time being.

Note: I haven't been able to get the stores section working: therefore haven't looked at this either.

## Changes / updates

+ Urls from the future added
+ SVG was corrected as was slightly cropped
+ Icomoon font was updated with a re-order icon
+ unavailable products in lists were made less visible
+ navigation top of page (accounts, notifications etc) was simplified, no need for fancy responsiveness
+ Button groups less was added in for drop down buttons (like wish lists)
+ Some overriding LESS was merged into bootstraps LESS (buttons and navbar)
+ Fonts turned into ems - to make it easy to global change responsively
+ Bootstrap grid to do all the work for product lists
+ Review list and detail pages tidy
+ Offer pages tidy
+ Updated site navigation if has children
+ Sidebar category list, search facets, wish list navigation share same styles
+ Wish list slight tidy on the detail page
+ Checkout nav re-added -- block renamed
+ Promotional blocks in different size containers (slight differences with image/single product if in sidebar)
+ Various responsive
+ Various IE7+ fixes