differentiate between formations that can attack, and formations that can only move. Use the differentiation in the range calculation.

git-svn-id: http://svn.wildfiregames.com/public/ps/trunk@14627 3db68df2-c116-0410-a063-a993310a9797
Let formations attack other formations (still without keeping their formation position though)

git-svn-id: http://svn.wildfiregames.com/public/ps/trunk@14628 3db68df2-c116-0410-a063-a993310a9797
Merge 'remotes/trunk'