`cursor: pointer` instead of `href="#"`?

Created by: tkazec

In both master and 2.0-wip, Alerts (and probably some other components) use <a class="close" href="#">×</a> for close buttons. Using href="#" to display the correct cursor can be problematic (clicking on it changes the URL and therefore adds to the tab history, scrolls the page to the top, etc), but can be replaced with cursor: pointer in CSS.

Is there any reason to not do this, or is it just a change waiting to be made? I can submit a pull request.