updated login page tamplate (added build number)

Author: Vladlukhanin

samples/chat/js/login.js

@@ -108,8 +108,7 @@ Login.prototype.renderLoginPage = function(){
     helpers.clearView(app.page);
 
     app.page.innerHTML = helpers.fillTemplate('tpl_login', {
-        version: QB.version,
-        buildNumber: QB.buildNumber
+        version: QB.version + ':' + QB.buildNumber
     });
     this.isLoginPageRendered = true;
     this.setListeners();