Issue description:
Not really an issue but not sure if you knew:
The Powercell is not accepting energy from industrial apiary (energy bees inside) in FTB Revelation.
Obvious fix below

Thanks for the awesome mod!

Hmm the powercell just follows normal RF API. So not sure what could be wrong on our side

The problem is that energy bees ask for the energy capability of the null/internal side of the block, and try to put their energy there: https://github.com/rwtema/Careerbees/blob/97d2556d95d33b4524a86e6b80bac086135dd285/src/main/java/com/rwtema/careerbees/effects/EffectPower.java#L49-L51

However, our powercells are set up to not be able to accept energy on the null/internal side, ever: https://github.com/McJty/RFTools/blob/f3894e41d5a0ba2027baa44e5e683c8eb47c68ba/src/main/java/mcjty/rftools/blocks/powercell/PowerCellTileEntity.java#L761-L766

I'm not going to leave this open any longer, since there's nothing further we can do about this. If you want this to get fixed, ask @rwtema to merge rwtema/Careerbees#14.

I took my own stab at fixing this while fixing a server-crash causing issue with Assassin bees. Hopefully it's accepted.

rwtema/Careerbees#39