[BALANCING] Matter reconstitutor added. Also refactor of smelting.

 * Matter synth is now matter reconstitutor.  Mobile and simplified recycling system.  Recharges glass and metal every tick (cyborg version only).
 * Smelting-related crap moved into its own smelting manager.  Removed a lot of duplicated code.
 * Added a way to have a maximum volume of materials in a "bin".

TODO:
 - [ ] Test mining stuff.