Fixing some issues encountered with a German locale

[e-tobi]

No description provided.

[dsmiley]

Um, I intended for Spatial4j / Spatial4n is supposed to be locale-independent -- i.e. toString() should be the same no matter what your locale is. But I suppose, given that this toString() representation is purely for debugging purposes and is not an official representation of the shape, that this could be relaxed here?

[e-tobi]

I think ToString() should by default output a human readable string which should be formatted for the users culture.

[synhershko]

Blah, stupid github notifications

This change is actually going your way, David - its mainly a forgotten CultureInfo.InvariantCulture in ReadStandardShape

[synhershko]

Thanks Tobi