ExpandThread tweaking.

Also fix code trying to $.off `ExpandThread.cb.toggle`.
Close #1106
Merge branch 'v3' of git://github.com/MayhemYDG/4chan-x into v3

Conflicts:
	src/Miscellaneous/ExpandThread.coffee
Avoid using {d.body,doc}.scroll{Top,Left}, use window.scroll[...] instead.
Personal choices
Merge branch 'v3' of git://github.com/MayhemYDG/4chan-x into v3

Conflicts:
	src/General/Header.coffee
	src/Images/ImageExpand.coffee
	src/Monitoring/ThreadUpdater.coffee
Fix "Advance on contract" option with Quote Threading
Small simplify
Forgot to account for hidden posts.
I think I'm satisfied with this now.
Merge branch 'v3'

Conflicts:
	LICENSE
	builds/crx/script.js