Mobile-friendly update

I've updated the build to be fully mobile friendly, although it may upscale by a weird amount for smaller screens.

Here's a full log of changes:

• Dedicated button to show interactables. Prior to this, you had to hold space
• Updated browser version so you cannot quit the game, which would result in a useless black screen
• Added inventory button descriptions to the tutorial screen
• Fixed some layering issues
• Fixed some text alignment issues