Move assign keys and power for rockets to the editor

Move the assign keys and power for rockets to the editor so they can be saved with the vehicle and you won't have to reassign them every change you make. In level 18 I spent most of my time reassigning keys, and I just gave up on reassigning power each time because of how long it would take. Leave a second rocket power thing where it is so that you can make quick adjustments to find the right power, but make it stay until you edit, so you don't have to reassign each playthrough.