Update supply crates

Added sci and engie crates, new sprites
Cleaned up supply_packs a bit
Added RnD crate (boards and parts, 30 pts)
Added Supermatter crate (1 shard, 100 pts)
Lowered RUST point cost
Resisted urge to comment mech board crates
Add RSF sprite
Merge pull request #510 from wild-billy/Bleeding-Edge

Update supply crates, Add RSF sprite