improvements to PPS behavior of PacketSender
added interface points to VoxelScriptingInterface to access stats from _voxelPacketSender
added a couple more JS APIs and removed some debug code
add support for tuning the size of packets used by VoxelEditPacketSender
get rid of magic number
style cleanup, correct some comments
Merge pull request #1236 from ZappoMan/packetserverPPSfixes

improvements to PPS behavior of PacketSender