6392-change-currencies-for-pl-ro-nz (#433)

* Prepare currencies for PL, RO and NZ

* Populate product-currencies and update relevant markets

* Scrap already deployed parts from migration

* Bump revcision

migrations/000.514.sql

@@ -0,0 +1,3 @@
+UPDATE markets SET currency = 'NZD' WHERE name = 'NZ';
+UPDATE markets SET currency = 'PLN' WHERE name = 'PL';
+UPDATE markets SET currency = 'RON' WHERE name = 'RO';