Fix a bug displaying tooltip.

Now it work in all cases, independently of the layout.

static/plugin_dbui/lib/appform2.js

@@ -55,15 +55,17 @@ App.form.EntryFormPanel = Ext.extend(App.form.FormPanel, {
 		
 		// Add handler to display tool tip for each field
 		// Require the configuration parameter tipText.
-		for (var i = 0; i < this.items.items.length; i++){
-			var field = this.items.items[i]; 
+		var fields = this.findByType('field');
+		for (var i = 0; i < fields.length; i++){
+			var field = fields[i];
 			if (field.tipText){
 				field.on('render', function(c){
 				    new Ext.ToolTip({
 				        target: c.getEl(),
+						title: c.fieldLabel,
 				        anchor: 'left',
 				        trackMouse: false,
-				        html: field.tipText
+				        html: Ext.util.Format.htmlEncode(c.tipText),
 				    });
 				});
 			}