Topbar and navigation .active selectors should be more selective

Created by: inolen

The .active selector for both .topbar and .nav currently cascade to all anchors inside of it, which causes problems with background colors when there is a dropdown menu for the active item.

See: http://www.stuntbums.com/active_nav.jpg

In the screen shot I set both dropdowns to display, the one on the right isn't active and looks correct, the one on the left is part of an active link and you can see the active background color overriding the normal dropdown background color.

Changing the .topbar selector to ul .active >a and the .nav selector to .active >a seems to resolve the problem.