removing include Sidebar_Currency from account page template

git-svn-id: https://silverstripe-ecommerce.googlecode.com/svn/trunk@5041 950b781c-c544-efab-2f99-90083ee69683
ENHANCEMENT: better way to do renderWith

git-svn-id: https://silverstripe-ecommerce.googlecode.com/svn/trunk@5045 950b781c-c544-efab-2f99-90083ee69683
ENHANCEMENT: remember fields searched for

git-svn-id: https://silverstripe-ecommerce.googlecode.com/svn/trunk@5046 950b781c-c544-efab-2f99-90083ee69683