There is no focus highlighting for buttons in active state

Created by: jobara

When buttons have the active class applied (.active), there is no focus highlighting on the button. This makes it hard to 1) know that you can deactivate a button and 2) for keyboard only users to know where they are. When a button is active it should still receive focus highlighting when the button is focused by either the mouse or keyboard.

Step 1: Go to the demo: http://getbootstrap.com/css/#buttons-active

Step 2: Using the mouse or the keyboard put focus on any of the active buttons. Note that you cannot tell which one is focused.

Tested on: Safari, Chrome, Firefox (Mac OS 10.9.1) IE 11, Chrome, Firefox (Windows 8.1)