pull fiat as integer from db

lib/postgresql_interface.js

@@ -191,6 +191,9 @@ function normalizeTx (tx) {
   tx.satoshis = undefined
   tx.session_id = undefined
 
+  // Eventually turn this into BigDecimal, for now, integer
+  tx.fiat = parseInt(tx.fiat, 10)
+
   return tx
 }