CAPTCHA fixes and extensions
RPMs: https://copr.fedorainfracloud.org/coprs/pbiering/InternetServerExtensions/build/6807476/
- CAPTCHA support: remove from password change
- CAPTCHA support: carve-out dedicated extensions in py files into shared function
- CAPTCHA support: carve-out html extension patch
- CAPTCHA support: add support for Google's reCAPTCHA v2 "invisible" and v3
- CAPTCHA support: add fix for broken v2 in django-recaptcha