This is safe
d.head is available at document-start in everything but Scriptish.
Which we don't support
Merge some old favicon changes from appchan that never made it back
to v3
Add the 4chanJS favicon to settings
Merge branch 'v3'

Conflicts:
	builds/appchan-x.user.js
	builds/crx/script.js
	src/General/html/Settings/Advanced.html