#26 Fix for some ranged attacks

[Talâs]

Fix for:

Ballista shooting spinning arrows.
Catapult/balista projectiles moving too fast.
Catapult/balista splash factor too low.
(it was 4, BNE said 4.5, so 5 seems better to me)

Mage Fireball missing splash damage.
Dragon/Griphon missing splash factor.

Battleship/Juggernaught missing splash factor.

cannon towers/destroyer projectiles moving too slow.
cannon towers/destroyer missing splash damage.

Splash factor calculated by testing in WC2 BNE.
(which seems to be randomized)
Should be checked against better values.

[Talâs]

fixes some ranged attacks