Add twitter field to be compatible with Yoast seo fields added to User admin pages

[nine-2-five]

Currently there's discrepancy between fields added by Yoast SEO to User pages, it would be great if you added those fields in get_guest_author_fields in class-coauthors-guest-authors.php

[davemac]

Also is it feasible to now remove AIM Yahoo IM, Jabber / Google Talk fields so that this matches the WP user profile where those fields have been removed?

[soderlind]

I modified get_guest_author_fields by doing the following, maybe you can borrow from it:

https://gist.github.com/soderlind/adfb886ecd8d3f401f25891c71120154

[GaryJones]

is it feasible to now remove AIM Yahoo IM, Jabber / Google Talk fields so that this matches the WP user profile where those fields have been removed

Handled with #830 (which will be released in v3.5.12).