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

The commit didn't work because the blocks weren't loaded yet.

This reverts commit 22dbbf0a.

Conflicts:
	minetest.conf.example

Add lag reporting to masterserver (average dtime)
StyledWriter  -> FastWriter in masterserver announce

because cmake is unable to parse it's own lists properly