fix for a couple issues with training roulette and prerequistes.

fixed an error in class icons setup. should be less blurry now.
adjusted spec numbers to align with New Perk Order.

fixed a redscreen error.

added metainfo for specs. Censer Bearer will unlock grenade launchers and canisters when selected as a secondary spec for random classes.

shut off srgb on the psi class icons. should be closer to the right psi colour now.
Added some stuff to make highlander complain about wrong mods.

Added notes in the spec descriptions about what gear they need.

Psi Specs now have psi-purple icons.
Added the Gravekeeper spec