replace (thank) and [patrol] links with buttons

[fbstj]

hide the link versions and replace them with button variants which are shown

<span class="patrollink">[<a href="?action=markpatrolled&rcid=$id">mark patrolled</a>]</span>

=>

<button class="patrollink" onclick="fetch('?action=markpatrolled&rcid='+this.rcid)" rcid="$id">patrol</button>

.mw-thanks-thank-link