Fix change event doesn't work and confirm delete issue

Hi,

This chrome extension is very useful for development uses. I just fix the two issues I found when I use it in latest Chrome 35.

1) JQuery change function somehow doesn't work, the form control cannot receive change event if you attached change handler. In this fix, I use browser native event api, it works well.

2) Delete button cannot work. The confirm dialog disappeared soon after it showed. I have no chance to click okay. In this fix, I use bootstrap-confirmation module to implement this feature.