Add way to have token be both rotated and mirrored

[Trainzack]

There is currently no way to have a token be both flipped and rotated. It seems like this feature would be helpful in many circumstances. For example, some tokens (like the coffin) are designed with a sort of 3d projection, but rotating a coffin changes the angle of the projection. If I have a hallway lined with coffins on both sides, I can only make the projections line up if the hallway is running horizontally.

This one is bad:

This one is good but can only be done horizontally:

What we really should be able to do is this:

[amishne]

I thought about it when I originally implemented the feature, but it seemed too esoteric back then. You make a fair point, but I do want to keep the clutter low. I'll think about it some more; in any case it won't be soon, sorry!