Merge branch 'feature/order-receipt-request-context' into feature/receipt-subject-template

Conflicts:
	cartridge/shop/checkout.py
Made order receipt rendered using RequestContext, so things like SITE_TITLE may be used.
Merge branch 'feature/receipt-subject-template' into develop

Conflicts:
	cartridge/shop/checkout.py
Made order receipt rendered using RequestContext, so things like SITE_TITLE may be used.
Merge branch 'feature/receipt-subject-template' into develop

Conflicts:
	cartridge/shop/checkout.py