Fix: for working attachments, hopefully.

Hotfix: fixed broke savegames "DLC not found"

Hotfix: removed sidearm until fixed better.

Added ability to add up to 5 attachments to all primary weapons.
Added the ability for all classes to equipe rifles and shotguns.
Added Sidearm option to all classes, might not work yet because of abilities if not will be worked on for next update.