Add proper command line help for the 44 subcommands of this file.

{5484} boss.utah$ manage_instance terminate -h
Terminate an experiment
Usage:
manage_instance [-ds] [-t id] terminate <instance> [-eLX]
Options:
  -e       - Record the experiment as expired instead of terminated
  -L       - Take the experiment lock from whoever has it
  -X       - Only the experiment creator can terminate (legacy RPC)
Global Options:
  -d       - Debugging, do not fork into the background
  -s       - Silent (no email)
  -t id    - Webtask ID