Pattern Overlay plugin by Jon Daniels, modeled on the Crosshair plugin by Matthijs Drost

git-svn-id: https://valelab.ucsf.edu/svn/micromanager2/trunk@14337 d0ab736e-dc22-4aeb-8dc9-08def0aa14fd
Added method to color correction code to clean up bad data from the reference.  Needs more work.

git-svn-id: https://valelab.ucsf.edu/svn/micromanager2/trunk@14338 d0ab736e-dc22-4aeb-8dc9-08def0aa14fd