Making it compatible with Spree 1.2
A couple of things I missed, files where moved mostly
Fixing Address namespace
Adding item on sidebar

Also changed spree requirements so it works with 1.3
Namespace fixing
Fixing price issues with spree 1.3
fixing bug that gave a wrong Adjustment total

removed some white space as well
Removing adjustment for user group, items are not added with group price
price bug fix
spree 2.0
Adding minimum order amount for groups
removing debuging line