FIX #281 Inconsistency in case types( camelCase and snake_case) in characters api

[Thiru-kumaran-R]

FIX #281 ,resolved inconsistency issue in casing in all json file in characters including 'add_type_to_character.js' and 'add_weapon_type.js'

[man90es]

I don't think it's a good idea to change attributes that someone's app may already depend on. If anything, I'd delete those attributes completely (still a bad idea) because they are duplicates of "vision" and "weapon"

[majkus522]

They aren't duplicates. Notice that visionKey and weaponType are always (mostly so pt translations which can be fixed) in english while vision and weapon are in a specific language. So they are entirely useless.