6.x

Issue #273964 by eshta: Improve CAPTCHA accessibility and implement HTML
Issue 2131739 by sun, eshta: add expected languages selection feature
Issue 2177281 by eshta: Added form behavior analysis tracking
Issue 2132701 by sun, eshta: Improve settings UX and add advanced config
Issue 2165073 by eshta: Add flag as inappropriate feature
Issue #2167931 by andrewbelcher: Reduce value for mapping.
Issue #2150075 by sun: Document fake test server.
Updated maintainer list in readme.

#2004770: Create a system that knows which modules were enabled and disabled so we can write the composer.json file automatically by cpliakas
#2004778: Protect the composer.json file with an .htaccess file by cpliakas

Webform Tabindex overwrites all other attributes assigned by other modules

- README.txt updated
- css/wikiwiki.css updated