Update code formatter to better reflect doc

The documentation at https://s.android.com/source/code-style.html
diverged with the actual implementation of the AndroidStyle.xml

* android imports are now on top
* spaces inside empty tags i.g."foo />"
* keep android:id, layout_width and layout_height as top xml atts.

Change-Id: Id51533bf4285e74bd8393529580fd0e168150cb8
1 file changed