Updates

So much things to complete :)

For now there is a short list of things I changed in main game server code:

- You could actually die now (when population reach 0).
- Guerilla code completed (including event display).
- You can detach chat window.
- Chat window display how old messages are (days).
- Various fixes for CHROME browser.
- Games browser display a message when no game is available.
- Some aesthetics changes to games browser and game stats pages.

Things remaining to do:

 - Auto-collapse empires who have not done a turn after 24 hours since it's creation. You know, to destroy zombies and gives space to real players.
- Missing calculations about galactic taxes and refunds.
- Invasion code.
- Nuclear warfare code.
- Fixing the mess with pie-charts.

Btw, I would like to thank people who posted bugs to bug tracker.