Oh man I drew the logo!

Changes:

• added a proper logo
• added the /chunk command, that teleports the player to the specific chunk
• added chat replace patterns like {maxint} or {farlands}
• added proper item stack management
• sand copper ores get affected by gravity
• added a bunch of new splashes
• added block scaling, managable via the options menu
• button textures now have noise
• grass blocks drop dirt
• added underground gravel deposits