GUI -- Minor adjustments to sample UI components (archetypes).

Change-Id: I410fc1822b0a3dac279b1e070e008a9c7b5d1b03

@@ -123,8 +123,8 @@ public class AppUiTableMessageHandler extends UiMessageHandler {
             // fake data for demonstration purposes...
             Item item = getItem(id);
 
-            ObjectNode rootNode = MAPPER.createObjectNode();
-            ObjectNode data = MAPPER.createObjectNode();
+            ObjectNode rootNode = objectNode();
+            ObjectNode data = objectNode();
             rootNode.set(DETAILS, data);
 
             if (item == null) {

 /* css for sample app view */
 
-#ov-sample h2 {
+#ov-sample-table h2 {
     display: inline-block;
 }
 
+#ov-sample-table div.ctrl-btns {
+    width: 45px;
+}
+
 /* Panel Styling */
 #ov-sample-table-item-details-panel.floatpanel {
     position: absolute;