v13.3.7: Subgroup Bugfixes

@emerali's PR added a ton more subgroups to the registry and fixed the bug where posts from subgroups on newsfeed were considered "Not CdT".

Firefox release

Firefox extension installer is attached (xpi). Click this and you should be prompted to install the extension.

Chrome web store link: https://chrome.google.com/webstore/detail/not-cdt/ebaificpkjbcfcpndjpmjggkiaadccoc