Major Changes

• Unlocked New and Load Game buttons on title screen (and removed Prototype button since loading a game goes to the prototype)
• Skill tree in prototype should save its state
• Fixed 'reload' command
• Fixed loading bar not filling when going to a scene other than the title screen
• Made the loading screen background solid
• Optimized container code and made hangers use a 1-space container to fix the bug below
• Fixed headphones glowing after being removed from hanger
• Containers disable colliders of items placed in them

+ Smaller changes and fixes.