Mightex C Series camera adapter

git-svn-id: https://valelab.ucsf.edu/svn/micromanager2/trunk@14700 d0ab736e-dc22-4aeb-8dc9-08def0aa14fd
Flatfield plugin: fix situation where the background or flatfield files are not found and the plugin does not show up

git-svn-id: https://valelab.ucsf.edu/svn/micromanager2/trunk@14701 d0ab736e-dc22-4aeb-8dc9-08def0aa14fd