Allow acq2server to create new directory on server

added 'f' option to copyfile, which forces copyfile to attempt to write
to the destination folder even when it is 'read-only'. In practice, this
allows it to create new folders when they don't yet exist on the server.
Corrected reference movie check

movNum should be equal to the reference movie number, not the reference
channel
Merge remote-tracking branch 'origin/master' into matthias-selectRois-dev