[ALOY-1258] RightNavButtons child button click events not fired consistently

When using the iOS RightNavButton*s* property of a window and adding more than one button to it as children, the click events on these buttons only work for the first 4 taps and then nothing happens when you click on them. Also see [this issue on Stackoverflow](http://stackoverflow.com/questions/26566043/in-titanium-js-when-setting-rightnavbuttons-the-buttons-only-work-for-the-firs/29083936#29083936) *Controller: index.js* {noformat}