space

Moths have the option to change their hair gradient, but don't have hair.

Just like how hair options are hidden, it should be hidden from species that do not have hair, and moved from non contextual preferences to secondary features.

Example:

In [25]: Maneuver.lambert(gto2, geo)
---------------------------------------------------------------------------
AssertionError                            Traceback (most recent call last)
<ipython-input-25-f36ab89d597a> in <module>
----> 1 Maneuver.lambert(gto2, geo)

~/Projects/LSF/poliastro/library/src/poliastro/maneuver.py in lambert(cls, orbit_i, orbit_f, method, short,

Currently it looks like that:

We could use a UI theme there. I'd also rather use styleboxes and piggyback on button and similar nodes than use custom textures.

[BUG]

Describe the bug
If your limb transforms due to the limb contract while holding something inhand the held item can get stuck. You cannot drop or throw it.

To Reproduce
Steps to reproduce the behavior:

1. Get the random limb rotation from
2. Be holding so