New creature that steal electricity ! + some sournd

Minecraft 1.6.4

New creature ! AI actualy do that :
1 they attack you when you are near
2 they search cable with electricity and steal electricity in
3 they duplicate when they have eat many
4 when they are hungry the become canibal
5 when they are to mutch hungry, they are dead
6 if a voltage surge come in the cable where they eat, they are killed
Actualy they don't spawn, only with egg

Sournd added to switch / relay / breaker
New wall watch
New lamp socket

some bug fix

ElectricalAge_BETA_1.2.0a =>
fix server crash when user break mod blocks
Add hardness for multi block

ElectricalAge_BETA_1.2.0b =>
Remove all debug spam, all, all all and all, and no debug spam remain
Fix replicator java reflection issue