ASIdiSPIM: fix previous attempt to check for too-small timepoint interval, factor out valid camera check so we can do it before calculating slice timing too

git-svn-id: https://valelab.ucsf.edu/svn/micromanager2/trunk@14659 d0ab736e-dc22-4aeb-8dc9-08def0aa14fd
ASIdiSPIM: fix problem where if only one camera was present we assigned it everywhere, updated comments to match reality

git-svn-id: https://valelab.ucsf.edu/svn/micromanager2/trunk@14660 d0ab736e-dc22-4aeb-8dc9-08def0aa14fd
ASIdiSPIM: added PCO support for easy timing mode calculations, still need to fill in exact numbers in some places

git-svn-id: https://valelab.ucsf.edu/svn/micromanager2/trunk@14661 d0ab736e-dc22-4aeb-8dc9-08def0aa14fd
Flat Field correction plugin: Change window name to menu name, move channel drop down bit to the left (still not where I would like it to be).  

git-svn-id: https://valelab.ucsf.edu/svn/micromanager2/trunk@14662 d0ab736e-dc22-4aeb-8dc9-08def0aa14fd
Hopefully speed up config prest switch in main window

The effect of this change is to simply revert one of the changes made in
r12056. This eliminates an unnecessary[1] full system state cache
update, which can block for more than a second on systems with lots of
devices.

[1] It is not _strictly_ unnecessary, in the sense that the display of
other config groups with interacting properties may become outdated
without the cache update. But it does not appear that the change in
r12056 was intentional.

git-svn-id: https://valelab.ucsf.edu/svn/micromanager2/trunk@14663 d0ab736e-dc22-4aeb-8dc9-08def0aa14fd