* IC2 rework to avoid a coremod or @Optional
Updated IC2 dependency
Refactored IC2 itemcharging to use an IBackupElectricManager.
Allows charging any ae powered item by using an IBackupElectricManager
instead of having to implement IElectricItem and stripping it by some
sort.
Updated IAEItemPowerStorage to use Actionable for an easier handling
with power APIs supporting a simulation.
Refactored EU P2P to avoid method stripping
Use a modified internal BasicSinkSource instead of implementing
IEnergySource and IEnergySink directly on the tunnel.
Removed the superfluous EU P2P layers.
* Removed internalBattery due to being too complex
* Creative Energy Cell is not a chargeable item
Added a singleton getter instead the public field.
Reduced all fields to private.
Replaced field access with getters.
Added setters where necessary (Dimension/Biome Registration)
Added config options to disable more features.
Splitted Enum name from the config key.
Changed FacadeConfig and Networkhandler similar to AEConfig.init().
yueh