Ports /tg/'s AI HUD!

Shameless ripoff of https://github.com/tgstation/-tg-station/pull/4048
Credit to Kelenius for the code.
Purges accidental files

Whoops.
Adds the chempen. Filled with chloral.
Sprite update! + Sensor Augmentation!

Also adds myself to the admins.txt because I am tired of having to
modify it constantly.
Created a new away mission, Moon Outpost 19, and changed the mission list to include the .dmm
Moved dead larva to freezer for fluff consistency.
Blue-green icon set
Merge pull request #834 from WJohn/awaymissionmoon

Moon Outpost 19 [Away Mission]
Merge remote-tracking branch 'remotes/upstream/master' into AI_HUD_NEW

Conflicts:
	code/modules/mob/living/silicon/ai/ai.dm
Merge remote-tracking branch 'remotes/upstream/master' into AI_HUD_NEW
Conflict merge fix. UUGH.
Revert "Conflict merge fix. UUGH."

This reverts commit 28bd142c010a3ae875e08506ec49142e3884c920.
Merge pull request #813 from GunHog/AI_HUD_NEW

Ports /tg/'s AI HUD!
Fixes #838 and fixes some grammar in some poster desc.
Possible fix for Travis hating me.
Merge pull request #841 from ike709/posters

Posters!
Janitor Clothes! (Also other things)
Flush all the magazines down the turrlet.
and down they go.
Welders and toolboxes updated