Bow Rebalancing

Magic Bow:
Doubled range to match long bow.
Added 100 hit roll modifier to match long bow.
Added 1 damage.

Neru Bow:
Set spell modifier to match battle bow.
Added 1 damage.

Both of these weapons are now equivalent to a common type of bow, except
with 1 extra damage. Admins can always further modify their properties
if they wish, but magic bows were strictly inferior long bows, and neru
bows were overpowered battle bows.

We've had the 'bow problem' discussion for awhile. Magic bows are just 
plain terrible, so they needed a boost. Neru bows are way too good, and
are being traded like black market items en masse for hundreds of dollars
between veterans, which is stark evidence they're broken.

Hopefully this 'standard bow +1 damage' rebalancing will help the situation.