Customisable bashing sound

Code only.
Sounds tweak 1
Sounds tweak 2
Comestibles pack.

1. Sewer brew + recipe.
2. Sewagas + recipe.
3. Stimgas
4. Fancy hobo + recipe.
5. Kalimotxo + recipe.
6. Bee's knees + recipe.
7. Whiskey sour + recipe.
8. Coffee milk + recipe.
9. Milk tea + recipe.
10. Bark tea + recipe.
11. Grilled cheese sandwich + recipe.
12. Cheese sandwich + recipe.
13. Jam sandwich + recipe.
14. Boring sandwich + recipe.
15. Wastebread + recipe.
16. Honeygold brew + recipe.
17. Honeyball.
Fix quote.
Fix.
Add mtype::hp to lua class bindings.
disable drawing of SCT when dead
prevent pain from skyrocketing when dead
boolean over indentation
Rename get_invlet_for_item() to find_usable_cached_invlet().
Adds survivor mess kit.

Functions as a mess kit but with full cook-pot functionality.

Bigger and heavier than the other mess kits, it runs on common lamp oil
and is auto-learn at fabrication level four.

Can rarely spawn in survivor zombie loot, otherwise craft-only.
Merge pull request #10399 from Mshock777/bashing-sound

Customisable bashing sound
Merge pull request #10458 from BevapDin/lua-mtype-hp

Add mtype::hp to lua class bindings.
Merge pull request #10459 from DavidKeaton/deathcam_011

DeathCam Update #4
Fix use_action and grammar.
Remember manually-assigned invlets, and use them preferentially.
Colour assigned invlets yellow in inventory screen.
Allow toggling of manual invlet assignment.
Bright red in stead of dark red for debugmsg().