hide is_supporter for not super_admins

Hej,

I see no point in allowing site managers on my network to be familiar with the term "supporter".

What about hiding the "supporter" option for non super admins.

That is as simple as adding " && is_super_admin() " on line 226.

if(function_exists('is_supporter') && is_super_admin()) {
			$selections['notsupporter'] = __("User isn't a supporter",'adlitewidget');
		}