Stack header account information in Groups tab

The only change is in layout-sw580dp which puts in the inner linear layout
as vertical with a few changes in the internal TextView layouts.  The other
two layout files are needed so that the 7" in landscape mode and the 10"
tablet use the usual unstacked account information header.

Bug: 6378444
Change-Id: Id8c598aeec33fa6d8416b9f39f5a116c6fcd873d