Keep the title in 404'd tabs.

Conflicts:
	src/Monitoring/Unread.coffee
Close #1449.
fix missing rel=noreferrer
Release 4chan X v1.9.2.9.
add beta/dev to userscript names so beta/developement versions can be installed alongside stable
update devDependencies
Merge branch '1.9.2.x'
extension based embed regexps should be case insensitive
Fix file info preview in the settings.

Conflicts:
	html/General/Settings-section-Rice.html
fix crash on deleting nonexistent item
fix errors from events in just-deleted clones
Fix thread status icon adding in original index.

Don't depend on page number.
Also added retina CSS class as in 4chan.
Refactor page number code; fix off-by-one error and page number on archived threads
Better description of current function of "JSON Navigaton" setting.

I expect to change the name in a future version.
Turn JSON Navigation, Expand videos on by default.
update README.md
README.md edit
Fix page number code.

Fixes bug from 04fa72aed9eba7658966bb242e0136794d1e611b.
Release 4chan X v1.9.3.0.
Merge branch 'master' into catalog

Conflicts:
	src/General/Index.coffee
	src/General/lib/thread.class