AG-1053 Tidy react examples, make more idiomatic

src-examples/simpleReduxExample/gridDataActions.jsx

@@ -0,0 +1,13 @@
+export function updateRowData(rowData) {
+    return {
+        type: 'ROW_DATA_CHANGED',
+        rowData
+    }
+}
+
+export function updateRowSelection(rowSelection) {
+    return {
+        type: 'ROW_SELECTION_CHANGED',
+        rowSelection
+    }
+}