reduce the size of the panel border.

static/plugin_dbui/lib/appviewportintreegrid.js

@@ -62,6 +62,7 @@ App.viewport.InTreePanelGrid = Ext.extend(App.viewport.InTreePanelBase, {
 				// embedded the grid and the filter in a panel
 				var wdg = new Ext.Panel({
 					layout: 'border',
+					border: false,
 					items: [{
 						region: 'center',
 						layout: 'fit',