Make the LimbSolver target always visible

[i-make-robots]

Is your feature request related to a problem? Please describe.
When you load an arm, the target is not visible at first.
It would be nice for new users to see it and intuitively know this is a thing to do stuff with.

Describe the solution you'd like
Somehow mark it as "show always".

Describe alternatives you've considered
Better text description of steps to take in the manual;
a wizard in the app to guide you;
youtube video tutorial (best?)