Better support for XEP-0158: CAPTCHA Forms (use case: ejabberd mod_block_strangers)
When writing to a non-contact with ejabberd mod_block_stranger activated, the messages are blocked entirely. When adding the contact, this is blocked by a captcha (<captcha xmlns="urn:xmpp:captcha">), which includes an image (XEP-0231: Bits of Binary). The message with the CAPTCHA is, AFAIK, of type normal, not chat. Currently, only the fallback body is shown, which contains a web page with the CAPTCHA. Native support by Gajim would be nice, however.