[web] remove widget.render backward compatibility
there are very few widgets outside CW that used old render API and they
should have all been updated by now.
functionload_now(eltsel,holesel,reloadable){varlazydiv=jQuery(eltsel);varhole=lazydiv.children(holesel);if((hole.length==0)&&!reloadable){/* the hole is already filled */return;}lazydiv.loadxhtml(lazydiv.attr('cubicweb:loadurl'));}functiontrigger_load(divid){jQuery('#lazy-'+divid).trigger('load_'+divid);}