Fixing issues from my last PRs

[gilbertohasnofb]

This PR should fix:

• main dialog now shows battery charge as percentage
• some gauges moved slightly back, sucction and ammeter gauges moved quite a lot back (back to their original position)

[gilbertohasnofb]

⚠️ ⚠️ ⚠️ do not merge this yet!

@Harald67 I also want to fix the FOV issue with this same PR. So far I can't reproduce it, see my comment #18 (comment)

So if you can please help me troubleshoot this it would be great as I am not seeing any issues here on my side. And then we can add the fix to this PR and merge it

[gilbertohasnofb]

@Harald67 I adjusted the viewpoint a little bit so that we can see better the runway during take off (the viewpoint was a tad bit too low in my opinion). I also made the copilot view as the last one, so that pressing Shift+V once go directly to it. I also added limits to the copilot's view, so that you can't look 180 degrees behind you (just like the pilot's view).

And so once we solve that bug you are having with the grey screen we can then merge this.