Attempt to fix redeem crash.

Fixed redeem crash.
Fixed redeem texture for some reason having alpha channel of another
texture.
Fixed health area model being too small sometimes.
Fixed health area size changing during crouch.

No longer bothering to update cam pos / look angles on model change.
Just do it every paint.
Fixed fast zombie being crippled if interrupted pre-pounce.
Slug Rifle headshot damage now displays 9999.

Slug Rifle headshots now display 9999 as their damage value (this is
only display damage, the actual damage isn't even relevant).
Slug Rifle passive no longer works on bosses.
Fixed $selfillum=1 being on some zombie view model materials.

Why this went unnoticed for years is beyond me.
Part 1 of capital letter purge. (DON'T USE)
Purge all capital letters.

This also hexes some of the view models. Should fix very rare missing
textures on servers without workshop + Linux downloadurl.
Merge branch 'master' of https://github.com/JetBoom/zombiesurvival

# By JetBoom
# Via JetBoom
* 'master' of https://github.com/JetBoom/zombiesurvival:
  Purge all capital letters.
  Part 1 of capital letter purge. (DON'T USE)
  Fixed $selfillum=1 being on some zombie view model materials.
  Slug Rifle headshot damage now displays 9999.
  Fixed fast zombie being crippled if interrupted pre-pounce.
  Fixed health area size changing during crouch.
  Fixed health area model being too small sometimes.
  Attempt to fix redeem crash.