BUGFIX/UPGRADE: Upgrading to 3.0

git-svn-id: https://silverstripe-ecommerce.googlecode.com/svn/branches/3.0@4576 950b781c-c544-efab-2f99-90083ee69683
BUGFIX/UPGRADE: Removing fullsitetreesort from default_sort to allow other testing.

git-svn-id: https://silverstripe-ecommerce.googlecode.com/svn/branches/3.0@4580 950b781c-c544-efab-2f99-90083ee69683