Fixed Mad Science IDs

I really screwed the pooch on this one. >_>
Atomic Science Uranium enabled

For the benefit of users of Magical Crops and MineChem, as Yellorite ore doesn't flag as valid for these mods.
Extra Utilities Generators added to Mekanism blacklist

Dodges a crash bug.
Quick config update pass for this hotfix
Testing rebalanced steam generation settings

If this works, steam production will be scaled up for Atomic Science specifically.

While it will not affect the reactor on its own or turbine performance, it *will* affect how powerful the reactor is at supplying steam for generators from other mods.

This retune also prevents other mods from reliably running the 5000RF/t large turbines, allowing them to retain their juggernaut performance.
Greatly extended support for the Crucible Furnace in Mariculture

It should now recognise most if not all materials in the modpack.

(Thanks Dave!)
Further config tweaks

Was supposed to be more substantial but the mod updates didn't affect the configs...
Updated ID Maps
Updating HEE to 1.4.2

The bugfixes are significant but it's not obvious from this commit.
RR 2.6.17.2-EXP-RC update

Significant bugfixes, generally a much stronger build, but will probably not be the last one (mainly because Big Reactors is due to go stable).
Merge tag 'tags/v2.6.17.2' into serverExp