- campaign header now contains text container and stores campaign texts
- map header now contains text container instead of inheriting it
- moved text container registration logic to a wraper class
- fixed registration of copied text containers (from copied map header)
- Constructor of Identifier from integer is now explicit
- Lobby hero/town selection now uses Identifiers instead of int's
- Removed serialization workaround for hero portraits
- Added dummy objects for custom heroes portraits for ID resolver to use
- HeroInstance now stores portrait ID only in case of custom portrait
- Fixed loading of campaign heroes portraits on RoE maps
