Minor refactor

proj/sxgame/vs2013/sxgame.vcxproj.filters

source/ambient/Renderable.h

source/ambient/Updatable.h

source/ambient/plugin_main.cpp

source/anim/AnimatedModel.h

source/anim/AnimatedModelProvider.h

source/anim/DynamicModel.h

source/anim/DynamicModelProvider.h

source/anim/Renderable.h

source/anim/RenderableVisibility.h

source/anim/Updatable.h

source/anim/plugin_main.cpp

source/common

source/core/AsyncFileReader.h

source/core/AsyncTaskRunner.h

source/core/Buffer.h

source/core/Config.h

source/core/Core.h

source/core/FileExtIterator.h

source/core/FileExtPathsIterator.h