Voxel Rendering Improvements - make it run at 60fps

- Added "Voxel As Points" mode
- Fixed bug in VoxelShader that caused slow downs in normal mode after disabled
- fixed packets per second bug in animation server threaded mode
- Added debug option for not calling _voxels.render() even if voxels are enabled
- Added debug option for not calling glDrawElements() inside of VoxelSystem::render() to test raw performance of draw
- fixed two mutex issues causes slower than 60fps