WIP optimize connect with redux state in preferences pages.

client/src/containers/Currencies/withCurrency.js

@@ -0,0 +1,16 @@
+import { connect } from 'react-redux';
+import {
+  getCurrencyById,
+  getCurrencyByCode,
+} from 'store/currencies/currencies.selector';
+
+
+const mapStateToProps = (state, props) => ({
+  ...(props.currencyId) ? {
+    currency: getCurrencyById(state.currencies.data, props.currencyId),
+  } : (props.currencyCode) ? {
+    currency: getCurrencyByCode(state.currencies.data, props.currencyCode),
+  } : {},
+});
+
+export default connect(mapStateToProps);