Fixes #5508

(cherry picked from commit d8ff5d8ac680b9d4fd7599f8e9a7e6e6ec3d9bde)
Fixes organs not being removed due to damage

Because the dismemberment check was being done before brute_dam was
updated, the attack that actually brought brute_dam above the threshold
would not be able to pass the check, regardless of how much damage was
actually done.

(cherry picked from commit f49e709394377054d7c32863c13a933babee517b)
Fixes #5640 Make sparks effect target mob, not organ
The malfunction sparks were calling to a var src, which in most other places is the main object itself, here that's the organ and it doesn't have a loc. Changed it to call the organ's owner.

(cherry picked from commit ff382bb231be3770602b8135a5538d3f76f75bb3)
Infections raise temperature faster wrt germ_level

(cherry picked from commit 13b757938d5f02d429e5d02c4d75854689a81bf7)
Fixes fever temperature not being reached

(cherry picked from commit 60c6a2ea9202f03f228c9b15d6d7be68d31e4a3e)
Adjusts the rate that infections deal toxin damage

(cherry picked from commit d9f70c2fd2f377fe4719612841dddcff158d845f)
Fixes icons not being updated for necrosis

(cherry picked from commit 78e4e259db901df447a0502713cf15aad2977afc)