Bug Fixes & Loot tweaks

This update is to address several issues with potential to softlock, and an additional balance pass to the loot tables to remove some "inventory filler" items (to balance what's dropped across the game better).

1. Fixed various UI navigation issues
   
2. Fixed quest-related events sometimes causing the game to become unresponsive
   
3. Fixed an important NPC sometimes disappearing in the early game, causing a softlock
   
4. Loot table balance to drop slightly less "inventory filler" items