Correct spelling mistakes in documentation
Improve timeout calculation

gf
Fix "ghost" blocks if block update is "on wire" while player digs nodes
Add player name length checks
Fix to to too two times
ban.cpp refactoring
Reduce time of red screen when damaged

10 seconds in PvP is very long and annoying.
Add ^[mask texture modifier
Use pause_fps_max also on multiplayer
Merge remote-tracking branch 'minetest/master'

Conflicts:
	src/clientiface.h
	src/constants.h
	src/main.cpp
Merge remote-tracking branch 'upstream/master' into next

Conflicts:
	src/server.cpp