Fixes some other third person camera specific attachments. Implements a single new flag for entities to be forced visible in first person mode. Old mods do not need to be updated to use the new flag and are fully backwards compatible.
Better header sorting by topic Make UnitSAO-specific parameters private Skip redundant recursive entity sending code (since ~5.2.0)
Move serverobject.{cpp,h} to server/serveractiveobject.{cpp,h} Move UnitSAO class to dedicated files
