New menus page header images
Removed subheader change

The name of the menu no longer is used as a sub header on the menus
page. Because of this, the script to change the menu sub header when
ajax loading a new menu was omitted.
Updated menu subnav layout and style
Fine tuning of page styles
Menu update
Layout and content update
Now passing variables to template via render

Rather than adding values to the $app array, passing page specific data
to the template in twig’s render method.