Move the qphl class back to the post instead of the postContainer.
It's the source of performance issues when quote previewing in large threads.
Close #992.
Fix #999
Close #994
Close #990
Add a setting to move the header to the bottom of the screen.
Release 4chan X v3.0.2.
typo
Fix loading image expansion in clones.
Merge branch 'v3' of git://github.com/MayhemYDG/4chan-x into v3

Conflicts:
	src/config.coffee
	src/features.coffee

We don't actually use the "Header", so the "move header to bottom"
setting has been removed as it wouldn't do anything.