Neon Noodles #15 - The Metrics Update

Getting quite close to finalizing all the companion functionality (Steam friends' scores is the only major item left to implement).

Here's what's in this update:

1. story tiers/tabs

2. fourth metric (sum)

3. metrics improvements - icons, visuals

4. save file metrics details

5. save file actions - create/copy/rename/delete

6. new histograms visuals

7. histograms in companion

8. selection fixes in companion

9. scrolling fixes for levels/tips/saves

10. proper ending for demo

11. layout menu labels

12. performance pass (companion)

I hope you enjoy it :) As always, feedback here or in the discord is always welcome.