-add client states to avoid server sending data to uninitialized clients
  -don't show uninitialized clients to other players
  -propper client disconnect handling
Minor comment fixes in server
Minor bugfixes in connection
  -improved peer id calculation
  -honor NDEBUG flag
  -improved disconnect handling
  -increased initial send window
Remove some dead code

As suggested by qwrwed.

Fixed lua error when none of the worlds or servers selected are and connect,
delete or configure buttons used.

Fixes camera glitch and cheating at drowning

Use tables for adding particles, deprecate former way.

separate particles(pawner) definition, add default values, work with no
arguments