c1290a7 webui: tooltip support

Authored and Committed by pvoborni 9 years ago
    webui: tooltip support
    
    Allow to set 'tooltip' attribute in spec. It displays info icon
    with Bootstrap's tooltip near field's label.
    
    https://fedorahosted.org/freeipa/ticket/4471
    
    Reviewed-By: Endi Sukma Dewata <edewata@redhat.com>