Update popup dialog example to demonstrate heading with class ui-title.
Update popup dialog example to demonstrate heading with class ui-title.

npmcomponent/cbou-jquery-mobile,hinaloe/jqm-demo-ja,arschmitz/uglymongrel-jquery-mobile,arschmitz/uglymongrel-jquery-mobile,arschmitz/uglymongrel-jquery-mobile,startxfr/jquery-mobile,hinaloe/jqm-demo-ja,startxfr/jquery-mobile,startxfr/jquery-mobile,npmcomponent/cbou-jquery-mobile,arschmitz/jquery-mobile,hinaloe/jqm-demo-ja,npmcomponent/cbou-jquery-mobile,arschmitz/jquery-mobile,arschmitz/jquery-mobile