Change class name of menu

Changed the class of the administration bar menu to supermenu

Signed-off-by: Kieran Briggs <kbriggs@kbwebsolutions.co.uk>
Deleted incorrect render call

Require call to renderer for admin setting bar corrected.

Signed-off-by: Kieran Briggs <kbriggs@kbwebsolutions.co.uk>
Corrected title

Corrected file title for menu CSS

Signed-off-by: Kieran Briggs <kbriggs@kbwebsolutions.co.uk>
Changed navigation_node function call

Changed navigation_node to new_navigation_node

Signed-off-by: Kieran Briggs <kbriggs@kbwebsolutions.co.uk>