Stonecage

Unresearched and unobtainable items now show up as a question mark instead of their model (to prevent players from accidentally crafting items they do not have the research for)

Sinks are now locked behind Aqueous Accumulator research.

Added research for crude solar panels

Added more options for midgame power:
Added a crafting recipe for oil sand
Increased the power generation and durability of crude solar panels
Changed the recipe for crude solar panels