Fixed some bugs

- Update lang
- Update conduit texture
- Fixed lighting bugs with conduits and stands
- Conduits can use the same world renderer now, but will still look the
same in the inventory without a custom renderer for the inventory.
Looking into this, however is not massive priority
- Allowed tiles to block power connections from certain directions
- Changed creative tab
- Added creative generator
- Added basis for the first legit generator
- Added textures for power indicators
- Added framework for power indicator update system
- Removed debug logging from EnergyNetwork so it didn't spam the console
when conductors are negotiating networks.
- Fixed EnergyNetwork not giving power after taking it from a block that
can fully satisfy the request
- Fixed EnergyNetwork unconditionally taking power even if it is a
simulation.
- Added new helpers to AbstractPacket and PacketPipeline
- Added the ability to push Properties instances into ByteBufs (yes, I
know this is kind of abusing ByteBufs, but I *do not care*)
- Pickaxes can now have tooltips