Fix for entity spawning in general
Added hardcore client effect

Also fixed multiple world comments issue.
Now chickens can drop eggs.

They drop an egg every 5 or 10 minutes.
Now chicken drop eggs
Changed variable name
Changed variable name
Merge pull request #322 from tonibm19/master

Now chicken drop eggs
Merge pull request #321 from mc-server/1.7pickupsfix

Fix for entity spawning in general
Merge remote-tracking branch 'upstream/master'