enable logout button on terminal page

notebook/static/terminal/js/main.js

@@ -6,11 +6,13 @@ require('xterm/src/xterm.css');
 require([
     'base/js/utils',
     'base/js/page',
+    'auth/js/loginwidget',
     'services/config',
     'terminal/js/terminado',
 ], function(
     utils,
     page,
+    loginwidget,
     configmod,
     terminado
     ){
@@ -18,13 +20,17 @@ require([
     requirejs(['custom/custom'], function() {});
     page = new page.Page();
 
-    var config = new configmod.ConfigSection('terminal', 
-                                    {base_url: utils.get_body_data('baseUrl')});
+    var common_options = {
+        base_url : utils.get_body_data("baseUrl"),
+    };
+
+    var config = new configmod.ConfigSection('terminal', common_options);
     config.load();
-    var common_config = new configmod.ConfigSection('common', 
-                                    {base_url: utils.get_body_data('baseUrl')});
+    var common_config = new configmod.ConfigSection('common', common_options);
     common_config.load();
 
+    var login_widget = new loginwidget.LoginWidget('span#login_widget', common_options);
+
     // Test size: 25x80
     var termRowHeight = function(){ return 1.00 * $("#dummy-screen")[0].offsetHeight / 25;};
         // 1.02 here arrived at by trial and error to make the spacing look right