title: Issue with Visual Studio when developing for Android. The apps opens but only shows the title without controls
body: <p>I'm having issues with Visual Studio 2015. I create a new project for Android, put my stuff (buttons, textviews, etc) and when I try to run the app it deploys and runs OK but I can only see the title in any of my apps. I hace tried several emulators and a real device with the same result.
  Any idea??? I've spent the whole day trying to solve this problem.</p>