Revert "Stopped minions now hit first."

This reverts commit 2ae5a1f8b507ab23316ecbd07807edd1ba725f92.

That commit introduced a bug where minions won't fight as they're
beign pushed from one way to the other. Also, I'm not that sure that
the "Wall of death" tactic would be good for the whole gameplay, so
I'm taking this feature off for some time.
Merge branch 'marce'