Enervative rounds will now always fail to disable the primary weapon of aliens that do not have a primary weapon.

that's a bug from the vanilla implementation. this change won't help any other disables tho.

damage added by silver, vamp, antiviolet more customizable (full array instead of just the damage bit)
added tactical text for explosive rounds warning about not having a big enough clip.
silver should now work against biolost.

Fixed Tech Reqs not being applied.