Fix lack of trailing slash on the individual forum RSS feed links. For some reason this was causing a bizarre middleware error 'request object has not attribute session'.

#downloads-search {
   text-align: center;
}
#downloads-add td {
    padding-bottom: 5px;
}

#downloads-add fieldset {
    margin: 1em 0 1em;
    padding: 0.5em;
}