Balance pass and massive mod support expansion

This combined extension and balance pass should get the pack's configs ready for evaluation testing (ideally through TS1 and TS2).

At this stage, the worldgen has been cleaned up, settings have been readjusted to fit the RR paradigms more closely, and the pack now loads and starts new worlds safely. To accomodate this properly, there have been some further ID changes, but this should be the last time that happens.

The headline feature change here is that ore worldgen is now handled almost totally by Metallurgy 3, except for ores it doesn't generate. This was a PITA to implement so don't toss it away lightly. ;)

All mods added to this build can be found via: http://bot.notenoughmods.com/1.6.2.html

For further information on this commit, consult the mirror commits for RU/patch.