seperated image controls

git-svn-id: https://valelab.ucsf.edu/svn/micromanager2/trunk@14853 d0ab736e-dc22-4aeb-8dc9-08def0aa14fd
added two classes for control seperation

git-svn-id: https://valelab.ucsf.edu/svn/micromanager2/trunk@14854 d0ab736e-dc22-4aeb-8dc9-08def0aa14fd
deleted unnecessary import

git-svn-id: https://valelab.ucsf.edu/svn/micromanager2/trunk@14855 d0ab736e-dc22-4aeb-8dc9-08def0aa14fd