Vtol startup and parameter fix

- corrected vtol parameter file so that auto paramameter documentation tool can handle them
- fixed names of environmental variables which have been renamed recently
If you ask this way then probably yes. I had this problem before that QGroundControl didn't show all VTOL params. Lorenz suggested to update QGroundControl. To be honest, I am very unfamiliar with the QGroundControl side so it would appreciate if you could give me some small hints (e.g. code lines) where the problem might be :)