The problem was that the CSS selector made *all* of a submenu's nested
menus visible. Fixed by applying the selector to the immediate nested
menu only.

fixes #4532: navbar responsive carets for dropdown-menus now hidden, also fixes borders on navbar form

https://github.com/twitter/bootstrap/issues/4508

should fix this issue

Conflicts:
	docs/index.html

bump up height of progress bars, give some extra depth with stacking bars, and then make the stacked bars actually work

Merge branch 'progress-multi-2.1.0-wip' of https://github.com/jpommerening/bootstrap into jpommerening-progress-multi-2.1.0-wip