Fixes #27 and #49

Fixes these two inter-related issues.

When using RemoteTech2 with the immediate mode terminal:
1) If vessel has 1 ore more crew **on board**, then we pretend the crew is operating the terminal and therefor have no signal delay.  Be careful, if all the crew leave the vessel then they can't use the terminal!  Fixes #27
2) Don't attempt to deploy commands with an empty queue.  Fixes #49