Public server checkbox
Fix serverlist
Fix multiple texture support for animated meshnodes
Worldlist fixes
Add alphabeticaly sorted worldlists
Select world after creation
Move worldlist handling to separate file
Merge world selection of singleplayer/server tab
Remove some useless code
Add VoxelArea:position, VoxelArea:iter and VoxelArea:iterp
Disallow the name 'singleplayer' in a multiplayer server
Clean up bumpmap code a bit