* Moved from global variables to CRobotMain members
* Added functions for accessing the values
* Cleaned up some code related to building objects, BotFactory, ResearchCenter and AutoLab
* added reading/writing working version of new model format V3
* added CStaticObject with minial interface intended for
non-interactive static objects like trees
* converted first model, tree0, to new format
* refactored model loading code based on code from dev-models
* support new model format V2 (without LOD levels)
* removed LOD levels support in CEngine and from model files
* preparations for new model format V3:
- support for multiple meshes in one model file
- support for saving crash spheres and shadow spots
- removed all direct dependencies on CEngine enum values
- quantized model rendering states to new flags and enums
* remove unused functions and members
* make protected functions used only locally or in factory
* rename some functions to be more meaningful
* refactor some enums to enum classes
* move functions creating objects to new class CObjectFactory
* replace calls to CObject::Create*() with CObjectManager::Create()
* move creation/deletion of some objects to better places
* make CModelManager non-singleton
* clean up some code in changed functions
* targets are now created in top-level build directory
* more things are now configured through CMake options
* changed debug build detection from NDEBUG to DEV_BUILD
* moved po and desktop directories
* moved last unit test out of src directory
* added logging of application events
* changed debug mode flag to independent debug modes
* added option to auto-start mission (load a mission immediately
after startup)
* removed "enum value out of range" prints
* some refactoring
Piotr Dziwinski