Buffs Plasma weapon damage in general, modifies other Goofball weapons

Created by: icantthinkofanameritenow

Makes some much-needed tweaks to the Goofball/XCOM energy weapons.

-All plasma weapons deal extra damage. -Laser and plasma pistols now fit in pockets. To compensate for the possibilities of having a pocket-sized laser gun usable, the laser pistol now deals slightly less damage compared to a laser gun. -Plasma rifle shots should irradiate targets hit by them like they're supposed to.