shop_weapon.php: change table spacing
shop_weapon.php: change table spacing

Shrink the Shield Damage, Armour Damage, and Power Level columns.

Also add a "%" symbol to the Accuracy column.

hemberger/smr,smrealms/smr,hemberger/smr,hemberger/smr,hemberger/smr,smrealms/smr,smrealms/smr