Fix webm PDF bug

Conflicts:
	builds/4chan-X.user.js
	builds/crx/script.js
implement length 1 queue of videos to be deleted
Release 4chan X v1.5.2.
Fix #1511
Re-setup the QR captcha when necessary. Fix #1534
Fix #1537
Fix #1536
Changelog.
Release 4chan X v3.20.1.
remove unneeded entry from feature initialization list
Merge commit '4b2862641095ffe5a25514fcc82458c72c601543' of https://github.com/zixaphir/appchan-x

Conflicts:
	CHANGELOG.md
	builds/4chan-X.user.js
	builds/crx/script.js
Merge branch 'v3' of https://github.com/zixaphir/appchan-x

Conflicts:
	CHANGELOG.md
	LICENSE
	builds/4chan-X.user.js
	builds/crx/script.js
	src/Images/ImageExpand.coffee
	src/Images/ImageHover.coffee
css fix
remove listeners on contract
better approach to hover css
get new hover working in catalog
Revert "I like that better"

This reverts commit 2ba7ae5d280c7f5c8c0ef803f99fcdd0606e7270.
fix hover/expand so it works when switching between catalog/paged modes
Fix webm upload. #1533
Release 4chan X v3.20.2.