BUG: adding a test to show layout switch bug

Fiducial display positions aren't updated correctly
on linux according to bug 1914. This test illustrates this in a
non failing test way so that cross platform behaviour can be
determined.

Issue #1914


git-svn-id: http://svn.slicer.org/Slicer4/trunk@22587 3bd1e089-480b-0410-8dfb-8563597acbee