*Fixed machines not invalidating when destroyed.
*Fixed advanced electric machines not accepting energy upgrades.
*Fixed theoretical elementizer progress not updating with speed upgrade.
*Removed unneeded methods from IElectricMachine.
*Renamed 'getScaledChargeLevel()' to 'getScaledEnergyLevel()'
*Completely refactored GUI code on machines.
*Added energy meter to all machines.
*Fixed minor GUI bugs.