Replace stockrecord_tags with purchase_info_tags in demo-site templates and docs as invented in oscar0.6. See https://github.com/tangentlabs/django-oscar/commit/6341b576bf9fa18c4dc1c78aaa88e174826763f6
Replace session_strategy template tag with purchase_info_for_product in demo-site temaplates and doc. See https://github.com/tangentlabs/django-oscar/commit/a8a140fa94baa13f778f9a1529de8d5c2b75e3f2
Merge pull request #1095 from okfish/fix/adjust-demo-to-0.6

Demo-site templates updated for oscar 0.6 release