Model InitiateDownsample

...ate-file-for-reimport commands.
I agree the name does not accurately reflect what the command currently does.  @ebelter do you have any ideas about how this would tie into the import process?  If this command should run the 'generate-file-for-reimport' command and additionally launch the reimports via the import manager, then the current name makes sense.  It depends how we see this fitting into the import process.  If it's better to leave this command as-is, @nnutter suggested rename is the right way to go.  I am leaning toward the latter option and renaming the command.