Ninja Death-splosion fix

Ninjas will now explode on death without an explosive implant or shitty
death checks on every human. They will also gib without a trace of their
gear upon exploding.
Minor fix for NanoUI

* I was passing src instead of src_object in try_update_ui, this is fixed now.
* Changed checks to use the isnul procl, just to be sure.
Merge pull request #111 from SamCroswell/master

Ninja Death-splosion fix
Fix #371 (vermin trying to spawn in assembly line). plus other simple_animal issues.

Conflicts:
	code/modules/events/infestation.dm
	html/changelog.html
Slimes split from a killed adult can understand humans. (#366)

Conflicts:
	code/modules/mob/living/carbon/metroid/death.dm
	html/changelog.html
Fixed ninja objectives not showing up in check antag
typo fix
Merge pull request #112 from alex-gh/reagent-fix

typo fix
Merge pull request #14 from ZomgPonies/master

09/01/14