Public theme - remove 1px movement on active links/buttons

Sometimes makes links a bit unresponsive (at least in Safari it does). Since we have other visual feedback such as -tap-highlight we don't really need this feature.

git-svn-id: http://textpattern.googlecode.com/svn/development/4.x@5263 2fea6a4d-a838-0410-917b-93a53c48e9d2
Consolidate a CSS rule

git-svn-id: http://textpattern.googlecode.com/svn/development/4.x@5264 2fea6a4d-a838-0410-917b-93a53c48e9d2