Make selector to hide text added when ads are blocked more specific

It was blocking the Catalog Settings save button.
Release 4chan X v1.8.10.7.
Merge branch '1.8.10.x' into 1.9.0.x

Conflicts:
	CHANGELOG.md
	LICENSE
	builds/4chan-X-beta.crx
	builds/4chan-X-beta.meta.js
	builds/4chan-X-beta.user.js
	builds/4chan-X-noupdate.crx
	builds/4chan-X-noupdate.user.js
	builds/4chan-X.crx
	builds/4chan-X.meta.js
	builds/4chan-X.user.js
	builds/4chan-X.zip
	builds/updates-beta.xml
	builds/updates.xml
	package.json
Release 4chan X v1.9.0.3.