Update app.js to remove warning related to ARIA.

static/app.js

@@ -7,12 +7,12 @@
 Dbui.setDynamicLoading(Dbui.debug);
 
 // classes required by the script
-Ext.require('Dbui.container.Viewport');
-Ext.require('Dbui.plugin.MathJax');
-Ext.require('Ext.direct.Manager');
-Ext.require('Ext.direct.RemotingProvider');
-Ext.require('Ext.EventManager');
-Ext.require('Ext.tip.QuickTipManager');
+Ext.require("Dbui.container.Viewport");
+Ext.require("Dbui.plugin.MathJax");
+Ext.require("Ext.direct.Manager");
+Ext.require("Ext.direct.RemotingProvider");
+Ext.require("Ext.EventManager");
+Ext.require("Ext.tip.QuickTipManager");
 
 Ext.onReady(function(){
 
@@ -22,6 +22,9 @@ Ext.onReady(function(){
 
     Ext.QuickTips.init();
 
+    // Remove warning on ARIA compatibility
+    Ext.ariaWarn = Ext.emptyFn;
+
     // Expose the remote methods
     Ext.direct.Manager.addProvider(Dbui.REMOTE_API);
 
@@ -33,8 +36,8 @@ Ext.onReady(function(){
     // NOTE: It should work when the browser is closed to.
     // Not working with FireFox 17.0.8, web2py 2.4.5 and Ext JS 3.4.0.
     // nor with Firefox 38, web2py 2.14.6, Ext JS 6.0.1
-    Ext.getWin().on('beforeunload', Dbui.closeUserSession);
+    Ext.getWin().on("beforeunload", Dbui.closeUserSession);
 
 	// Instantiate the application
-	app = Ext.create('Dbui.container.Viewport', Dbui.config.viewport);
+	app = Ext.create("Dbui.container.Viewport", Dbui.config.viewport);
 });
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