Futurepack Fixes - Bypassing Critical Research Loop

This patch fixes an issue related to bug #537 in the Futurepack modification that completely blocks progression through the technology tree. The problem was that to unlock research, a generator was required that couldn't be obtained until visiting the Menelaus world, but to travel to Menelaus, this very generator was needed.

The fix completely reworks research requirements in the technology tree. Instead of the blocking infusion generator that was unreachable, the water turbine is now required, access to which opens up much earlier and allows for systematic progression through the research chain.