Apk Build UI 

Regarding  #3351
![screenshot from 2014-09-09 16 54 46 v01](https://cloud.githubusercontent.com/assets/8182792/4210875/08b1dca0-387d-11e4-8463-3119a6d60989.png)

review @ussuri @devoncarew 

Change the id to something that makes sense here. In addition to the semantic value of that, we already have `pushUrl` in "Deploy to Mobile" dialog, and generally speaking having duplicate IDs in the same HTML is bad: querySelector misbehaves, and I think CSS misbehaves too. We're partly saved from that by the fact that we're always apply querySelector to a dialog's element, rather than using the global one, but still, it's best to use unique IDs as much as possible.