Small pefomance boost for drying blood.

Now using colors instead of icon procs.
Fixed dried blood showin up as 'dried the blood'
Merge branch 'master' of https://github.com/comma/Baystation12
Fix for #3583
Hostile mobs now check adjacency before applying damage.
Fixes #4071
Emote needed "me" action first, using custom_emote instead.
Merge pull request #4114 from comma/master

Fixes & Perfomance