AG-1053 Tidy react examples, make more idiomatic

src-examples/simpleReduxDynamicComponentExample/gridDataActions.jsx

@@ -0,0 +1,13 @@
+export function updateRowData(rowData) {
+    return {
+        type: 'ROW_DATA_CHANGED',
+        rowData
+    }
+}
+export function setCurrency(currencySymbol, exchangeRate) {
+    return {
+        type: 'CURRENCY_CHANGED',
+        currencySymbol,
+        exchangeRate
+    }
+}