Fixes Luzivras_Factorio_Power.

This mod is meant to provide an UPS-friendly lategame energy production alternative.
Adds 8 tiers new tiers of solar panels and accumulators, each one x8 as powerful and expensive as the previous one.

Has significant advantages over Factorio_Power_RE by gmyx
- Focus on essentials: Adds just the Solar Panels / Accumulators, nothing else
- Inherits all the fixes from gmyx, but keeps the balance of Luzivras
- Significant mod loading speed improvement by optimizing gmyx's code and not using globals anymore
- No more dependencies; replaced libraries with my own (faster) util functions
- Language support: English & German locales
- Mod settings for tier-based technology research multiplier (x2 [sandbox], x4 [standard], x8 [challenging])

Thanks to:
Luzivras - initial mod idea
gmyx - inspiration and providing a starting point for this mod