Some new characters, bodies and miscellaneous fixes

Game

Fix weapon pickup issues #660 (reported by @chack05, fixed with help from @JonDegn)
Fix various trailer and hitscan issues #662 (reported by @chack05)
Fix crash when saving new player template
Fix black "(End)" menu item in player name menu #679
Fix bullet trail color
Fix crash when co-op AI present in mission with show map pickup
Add dog character
Add option for missions having no exit area #501
Add multiple body types in various campaigns #485
Add facial expressions when using melee weapon, getting hurt #677

Editor