V2.2 performance and questline update

extra misc questlines soon!

-fixed performance completely

-removed all unnecessary files in modpack filesystem

-fixed questline reward tables

-lowered quest loot output for mekanism quests

-lowered quest loot output for sophisticated backpacks quests

-added new background to main menu

-fixed essential mod issue with wardrobe

-added new loot tables to mekanism quests