Config/ID map update mirroring RU 2.1.0.0

Extra mods added again.

Please note also that Metallurgy is configured to add ores above y-70 for a reason: RR 1.5.* had really boring mountains. I'd like RR 1.6.* to not repeat this mistake. :)

There appear to be some minor cleanup issues I didn't catch when publishing RU so there may be further changes. The only reason not to push them is for the benefit of any FTB forum users using the pack but I think that's pretty rare now.