.hgignore: add vendor tree composer.json: new packages plugins/thunderbird_labels/thunderbird_labels.php: change hook and RFC822 use wrt whitelisting to avoid deprecated stuff index.php: commented debugging hooks others: new releases of vendor packages?

#messagetoolbar a.button.archive {
	text-indent: -5000px;
	background: url(archive_act.png) 0 0 no-repeat;
}

#mailboxlist li.mailbox.archive > a {
	background-image: url(foldericon.png);
	background-position: 5px 1px;
}