Small updates to mapping script

Signed-off-by: Jenny Fisher <jennyf@uow.edu.au>
Updates to get_er2.pro

Signed-off-by: Jenny Fisher <jennyf@uow.edu.au>
Updated make_planeflight.pro to use correct ER2 filenames.

Signed-off-by: Jenny Fisher <jennyf@uow.edu.au>