Electroshock unit/doc

• Works with 30% chance on any non-electric enemy and consumes power only on successful shocking. Monster will suffer additional 2-15 damage and become paralyzed on 360-900 movement points. NPC will only suffer 2-5 additional damage, but will be paralyzed on 600-1500 movement points.
• "Weapon that conducts electricity" should as of 0.C (Cooper) correctly apply to any metallic melee weapon.