uiref -- added extras view, and demonstrated fallback keystroke handler.

Change-Id: I9c0399b7b10bf86ffa3069863b5282042c8a0d7c
diff --git a/uiref/src/main/resources/app/view/uiRefExtra/uiRefExtra.css b/uiref/src/main/resources/app/view/uiRefExtra/uiRefExtra.css
new file mode 100644
index 0000000..f0757f8
--- /dev/null
+++ b/uiref/src/main/resources/app/view/uiRefExtra/uiRefExtra.css
@@ -0,0 +1,11 @@
+/* css for UI Reference App extras view */
+
+#ov-ui-ref-extra {
+    padding: 20px;
+}
+.light #ov-ui-ref-extra {
+    color: navy;
+}
+.dark #ov-ui-ref-extra {
+    color: #88f;
+}