Light entities clean ups
Deprecate FogStength
Added FogStrength
Rearranged properties so they appear more logically in Hammer
Removed "No Shadow" volumetric fog options from Orthographic Light - they are not supported by the engine
Removed Volumetric Fog options from Environment Light - Fairly certain volumetric fog does not function for that entity
Added pointers to entity/property descriptions regarding how to get volumetric fog working in a map
Removed HideInEditor from base entities as we now use opt-in system
Improve some attribute descriptions
Delete native map IO from native light entities
Delete native map inputs/outputs from BaseEntity
Remove native map inputs from Model/AnimEntity