fix enableIfChecked behavior for checked items
fix enableIfChecked behavior for checked items

For example when reloading the page or using the back/forward buttons.
Browsers keep disabled information for input elements, but when using
e.g. <a> tags instead of buttons we need to explicitly set the state
depending on whether something is checked or not

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