Almost working.

But now I know how to do it right. :)
Much better but still needs a little work.
Corner case
There we go, escaped brackets.
Note.
Merge pull request #8 from MOARdV/master

Most of the MJ SmartASS interface
Fixed.

By default, SmartASS doesn't actually query those values until the GUI
tells it to -- it's really a relatively thin interface for a much more
complicated set of functions deep in MechJeb core with PID controllers
and everything, which we don't want to drive directly if we can help it.
I tried to sleep but then I had a super idea.

That is superscript. :)
I have a clever use for this.
Added MJ Execute Node menu item.

Also fixed a couple missing SmartASS.Execute, and removed the unimplemented SmartASS entries from the root menu.