Improve enableIfChecked
Improve enableIfChecked

Add extraCheckCallback argument. If it returns false for any of the
checkboxes the button will be disabled.

pferreir/indico,mvidalgarcia/indico,pferreir/indico,ThiefMaster/indico,mvidalgarcia/indico,OmeGak/indico,mic4ael/indico,OmeGak/indico,mic4ael/indico,ThiefMaster/indico,pferreir/indico,indico/indico,indico/indico,OmeGak/indico,DirkHoffmann/indico,DirkHoffmann/indico,DirkHoffmann/indico,ThiefMaster/indico,mvidalgarcia/indico,indico/indico,mic4ael/indico,ThiefMaster/indico,mvidalgarcia/indico,DirkHoffmann/indico,pferreir/indico,mic4ael/indico,indico/indico,OmeGak/indico