Corrected disabling of heading links in the mobile menu.
Merge pull request #2303 from pjackson28/v3.0

Corrected disabling of heading links in the mobile menu
Merge branch 'v3.0'
Fixed bottom border of collapsed top-level mobile menu item.
Merge pull request #2304 from pjackson28/master

Fixed bottom border of collapsed top-level mobile menu item