click on Facebook from ev.me name === 'e.me' and url === 'https://m.facebook.com'

-> open a new wrapper

click on Facebook from ev.me name === 'e.me' and url === 'https://m.facebook.com'

-> reuse the wrapper

click on Google from ev.me name === 'e.me' and url === 'http://www.google.com'

-> kill previous wrapper and open a new one

If mozbrowser APLI would define a |clearHistory| method for example we could reuse the same wrapper always. AFAIK is doesn't exist so if we reuse the same wrapper when we load Google we can see Facebook during one second and furthermore we can open the buttonbar and click on 'go back' and return to Facebook from Google. And this behavior is wrong.

This implementations is only from apps launched from ev.me. Bookmarks define _blank as name. One app -> one wrapper