ENHANCEMENT - repairing

[Doronimmo]

When building a block in a place that's red in the minimap (recently destroyed), the build menu could start from ruined block (if building where a forcefield was destroyed, the menu would automatically start in the forcefield field instead of default Hull

[evanbowman]

I've thought about that, I was uncertain if it would confuse people if the construction menu sometimes opened up to a different starting position unexpectedly, but it would be very easy to add

[evanbowman]

There are other things I think I still need to add to the minimap that would be helpful, like cursor position, perhaps. I also I'm unsure about when the red indicators should disappear from the minimap, so currently I leave them shaded until the end of the level.