-Fixed some resource locking on GameEntityManager

-Added new Export() methods to entities to get the object builder
-Finished main implementation of VoxelMap to get size, mass, volume and material composition
-Cleaned up unused type converters

-Added resource lock to ChatManager.ChatHistory
-Fixed dead-locking bug with GameEntityManager
-Converted Id and Definition properties to use built-in definitions manager and types
-Improved inventory performance by removing old API code and using new Id and Definition properties
Merge remote-tracking branch 'upstream/master'