Display First Name and Last Name in members list

Describe the bug Converse is giving nickname higher priority than fullname when it evaluates the function getDisplayName in vCards. This causes autocompletion lists to always show vCard usernames instead of full-names (first and fast names).

https://github.com/conversejs/converse.js/blob/ad4999384d221b41bad6a8ec9e4fe15cadf9ef15/src/headless/converse-vcard.js#L98

See this bug report for more detail

Solution is to swap postions

getDisplayName () {
    return this.get('fullname') || this.get('nickname') || this.get('jid');
}

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[deleolajide]

In what way does it become compatible with Prosody?

The full discussion can found here.

[deleolajide]

and is therefore also how other adhering clients will order things).

Did we get agreement from the server implements too. I am being asked by Prosody to changes this.

Alright. We can leave this as it is and tackle the issue at the auto-complete lists, but my instincts and experience tell me that this will show up again as another issue some time later, somewhere else.

My displayed name should be my full-name from vCards. If not available, then use a nickname before resorting to my JID.