[popup] Swallow button vclick that launches popup
[popup] Swallow button vclick that launches popup

This fixes the bug whereby popup appears and then disappears when opened on iOS.

Thanks for your help, Sasha!

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