ui: add shell panel under administration

some users prefer an inline console
we still have the pop-out console in 'Administration'

Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>

www/NavigationTree.js

@@ -55,6 +55,12 @@ Ext.define('PBS.store.NavigationStore', {
 		expanded: true,
 		leaf: false,
 		children: [
+		    {
+			text: gettext('Shell'),
+			iconCls: 'fa fa-terminal',
+			path: 'pbsXtermJsConsole',
+			leaf: true,
+		    },
 		    {
 			text: gettext('Disks'),
 			iconCls: 'fa fa-hdd-o',