* Moved IsServerside to custom flags
* Flags moved from areatrigger_template to areatrigger_create_properties
* New field to create custom CreateProperties (IsCustom)
* New field to reference custom areatriggers (IsAreatriggerCustom)
* Moved fields for shape data to areatrigger_create_properties
Port From (https://github.com/TrinityCore/TrinityCore/commit/37eb2e64a6ad075e9866af6feb72bb4fbccb2adc)
* Scale curves are now taken into account when searching for units inside
* Implemented SpellModOp::Radius for areatrigger radius
* Implemented OverrideMoveCurve updatefields - overrides areatrigger position
* Implemented FacingCurve and AREATRIGGER_FLAG_HAS_ABSOLUTE_ORIENTATION
* Implemented ***Target fields for all shape types
* Fixed facing calculation for areatriggers with spline movement
Port From (https://github.com/TrinityCore/TrinityCore/commit/c676d1477239aec4d0b235a410e5627a7070a86e)