Added events, fixed english file

- Added an events system, and the following events:
- onPickingStart(frota): When the picking stage is loaded
- onGameStart(frota): When the game actually starts
- assignHero(frota, ply): A player needs a hero to be assigned
- onHeroKilled(frota, killedUnit, killerEntity): A player was killed by
something (note: killerEntity could be null)

- Fixed frota english, someone added some binary bits to it, which made
it not load, and they changed the encoding for some reason, I should pay
more attension to changes >_>