Is it possible to edit your game controls while in the editor? And if not, in a configuration file?
Have you actually looked through the config files? You should be able to, if not in-editor/game, then in the .cfg file or something like that.
I'm not seeing any cfg files at all in the Editor folder, let alone one that looks like it should allow me to change controls.
After doing research, I have seen NOTHING on anyone changing the controls, so I highly doubt it. Sorry!
Btw, the original post wasn't meant to sound like you were ignorant or anything, it just seems like a lot of people (me included) tend to not even look for something then post looking for help.