Find qa-theme.php
Backup this file in case you make a mistake editing.
One change needs to be made.
Around line 760 find
// remove avatar - personal preference
function post_avatar_meta($post, $class, $avatarprefix=null, $metaprefix=null, $metaseparator='<br/>')
{
$this->output('<span class="'.$class.'-avatar-meta">');
//$this->post_avatar($post, $class, $avatarprefix);
$this->post_meta($post, $class, $metaprefix, $metaseparator);
$this->output('</span>');
}
Remove // from //$this->post_avatar($post, $class, $avatarprefix);
Save qa-theme.php
This was a personal preference for us to remove avatars - so we have not tested how they will appear when this change has been made.
Best of luck.