fix turret activation use of wrong ammo
Merge branch 'fix-turret-ammo' of https://github.com/BevapDin/Cataclysm-DDA into BevapDin-fix-turret-ammo
add message for ammo requirement of turrets
Merge branch 'fix-turret-ammo' of https://github.com/BevapDin/Cataclysm-DDA into BevapDin-fix-turret-ammo
tighten grammar

Wasn't incorrect but wasn't necessary either.  Sorry.
Merge branch 'BevapDin-fix-turret-ammo'