Even more fixes!

[zerg960]

/loglevel changed so that the server can continue to log everything to file.
Random /home picture changed colors & use bigger pixels.

Nether portals no longer clamp the portals on the main map to a max Z of 3900 or a min Z of 6100 ( a 2200 block big buffer zone between continents.) There is now a 200 block big no-portal area instead.