Adjust the Population Scaling for Blobs

[aft2001]

Hm. Since blobs always seem to come in multiples, I propose the following tweak alongside blob spawn rate tweaks:

Buffing the blobs whenever a fellow blob is killed. While this proposal is fairly off-topic, it would also assist in stopping the blobs from being steamrolled as soon as one is found.

I also like the idea of blocking teleportation onto a blob tile - after all, they should be obstructed due to the blob being there.