[Rules] Friendly fire mods

[plloyd1010]

Finishing up BSS 28: Stalemate at St. Barthelemy an odd thing happened. A leader with the mortarman/artillerist skill activated a strike against one of my stacks. An adjacent SS stack was hit by friendly fire. The target hex was not in LOS of the firing mortars, the friendly fire hex was.

• Would the +1 shift for the mortarman/artillerist skill apply to friendly fire incident? (Presumably the leader involved is not directing that fire.)
  
• Would the -1 for firers having the target in LOS be applicable? (As in we are hitting our guy, better stop.)

We decided neither modifier should apply in that moment. We are also thinking that the -1 should apply in future games.