don't add aria-expanded to all the navigational links, just the ones with a submenu.
Wiki column updates to better manage RTL and hidden columns
Merge pull request #1599 from darkwing/bidi-column-updates-merge-1

Wiki column updates to better manage RTL and hidden columns
Merge pull request #1600 from icaaq/Improvements-to-a11y-of-nav-menus

Improvements-to-a11y-of-nav-menus