ASIdiSPIM plugin: renamed color to channel.  Added buttons to dynamically generate as many channels as desired.  Fixed small bug in Advanced volume setting window such that the simple settings now get selected when closing the window

git-svn-id: https://valelab.ucsf.edu/svn/micromanager2/trunk@14852 d0ab736e-dc22-4aeb-8dc9-08def0aa14fd