Fixes #7068
Solves a runtime when someone tries to mop up blood.

proc name: afterattack (/obj/item/weapon/mop/afterattack)
  source file: mop.dm,45
runtime error: undefined proc or verb /obj/effect/decal/cleanable/blood/tracks/footprints/clean().
Merge pull request #7087 from mwerezak/master

Fixes #7086
Randomizes strange seed icons, fixes poppies.
Amendment to the previous.
Map fixes - Vacuum Removal

A number of tiles seem to have inherited settings which are now inappropriate.
Removing these even though the pressure difference between these near-vacuum and standard pressure areas could cause hilarious injuries at round-start.
Merge pull request #7109 from Ccomp5950/mop_fix

Solves a runtime when someone tries to mop up blood.
Merge pull request #7106 from Zuhayr/xenoflora

Randomizes strange seed icons, fixes poppies.
Cleans up monkey initialization
Fix neaera cubes, change monkeycube eat varfind method to not create nullspace monkeys
fixes adminhelp to support mods as well.
Merge pull request #7123 from DJSnapshot/adminfeatures

fixes adminhelp to support mods as well
Merge pull request #7120 from mwerezak/init

Cleans up monkey initialization
Merge pull request #7121 from GinjaNinja32/monkey

Fix for runtiming neaera cubes