Modified the implementation of the avatar tag to look for an attribute 'user_profile' on the user object. If present, this is assumed to be the profile. This improves the performance of the member list and some forum views.

div.potd-details {
    text-align: center;
}
div.potd-details p.caption {
    font-weight: bold;
}
div.potd-details p.details {
    font-style: italic;
    font-size: smaller;
}