Hide maneuvers when deciding barrel roll.
Removable turns.
Add some docs.
Add toggleable deploy and asteroid areas.

Grid is toggleable.
Clone/delete ships.
Fix bug where movement HTML wasn't cloning.
Add select none.
Select none button; compile artifacts.
Better show/hide control during barrel roll.
Fix heading weirdness (hopefully without infinite recursion...).
Remove debugging output.
UI cleanup when no ship is selected.
Fix bug where ship color wasn't being used.

Still need to copy the color (or a modified version) on clone.