Re-set the image window title when the zoom tool is used.

This doesn't fix the zoom in/out buttons on the main frame; that's next.

git-svn-id: https://valelab.ucsf.edu/svn/micromanager2/trunk@13838 d0ab736e-dc22-4aeb-8dc9-08def0aa14fd
Fix the image display window title after using the zoom in/out buttons.

git-svn-id: https://valelab.ucsf.edu/svn/micromanager2/trunk@13839 d0ab736e-dc22-4aeb-8dc9-08def0aa14fd