First commit of modernizarion of Qt signal connections,
the new signal connection is very userfull because of a few
nice things:

- it's checked at compile time instead of runtime
- it can connect to any function or method, so we don't need
to use slots anymore
- it's way faster because it doesn't need to work with string
comparisson, but it's basically a direct call.

Signed-off-by: Tomaz Canabrava <tomaz.canabrava@intel.com>

Users are getting confused because we are missing images. Will put back
new fancy version once we get new airframe config plus auto-generate of
images sorted out.

Causes UI to hang up

Hamburger: Delete, Delete All, Show all Values

Hamburger: Delete, Delete All, Show all Values

We have real meta data now. Fake meta data was buggy

At that point the vehicle is gone, so need to to clean it up