Current location shouldn't be clickable

[David Schwartz]

The currently selected location amongst mutually exclusive navigation choices, e.g., tabs, should not be clickable so that it won't entice the user to merely re-load the same page. Otherwise, the user thinks they're going somewhere when, in reality, they're staying where they are currently. This would apply to other widgets that are used to present navigation choices as well.

[bill]

Nikolai, can you grab this for 1.3? Just a question of checking all the widgets and fixing cursor: declarations in CSS rules.

[bill]

Stealing this back. I reviewed are current widgets with a selected item, about what happens on mouse over:

StackContainer: color changes and the cursor is strange; it's either a hand or an arrow depending on whether the mouse is on the edge or in the middle X

TabContainer: no color change but hand cursor appears; should be pointer X

AccordionContainer: no color change or cursor change ✓

RadioButton: cursor in N/A since it's always an arrow regardless of whether the radio button is pressable or not; no color change. ✓

[bill]

Fixed in [16006], [16007], and [16008], along w/some general CSS cleanup.