Fixed button labels on the Steep VisualEditor views.
Fixed button labels on the Steep VisualEditor views.

Removed an href - the on click event is always getting prevented, so we
have to register our own instead of setting this href property.

cse-bristol/steep-mediawiki-gadgets,cse-bristol/steep-mediawiki-gadgets,cse-bristol/steep-mediawiki-gadgets,cse-bristol/steep-mediawiki-gadgets