add test for previous vat-included prices fix, fix #129
add test for previous vat-included prices fix, fix #129

givanse/better_spree_paypal_express,Lostmyname/better_spree_paypal_express,Boomkat/better_spree_paypal_express,spree-contrib/better_spree_paypal_express,Boomkat/better_spree_paypal_express,givanse/better_spree_paypal_express,quentinuys/better_spree_paypal_express,FlexMessenger/better_spree_paypal_express,quentinuys/better_spree_paypal_express,spree-contrib/better_spree_paypal_express,spree-contrib/better_spree_paypal_express,FlexMessenger/better_spree_paypal_express,FlexMessenger/better_spree_paypal_express,Lostmyname/better_spree_paypal_express,Boomkat/better_spree_paypal_express,Lostmyname/better_spree_paypal_express,quentinuys/better_spree_paypal_express,givanse/better_spree_paypal_express