added project WorldBuilder
added project World and World.Unit
misc. small changes
implemented loading scene in Underworld project
added class DebugClient
fixed updating mobile and player when they are not init'ed yet
optimized VectorIRotate() by using matrix operators
fixed ProjectGuid of Common project
added many projects to main solution
added AudioPlayer project
fix Common.vcxproj
fix Underworld.sln
added class MmTimer
added WorldBuilder Model files
added "update player" event
changed camera position and size of checkerboard
added test for preloading with LoadingScene
misc. changes to Arena project
added dummy class TerrainRenderManager
set copyright version to 2014 and unified use of doxygen \file option