ping links in a topic

links.js

function verifyLinks() {
		$('.post-content a').each(function(index, element) {

			var link = $(element);
			var parent = link.parent();
			if(link.attr('class') || link.attr('done')) {
				return;
			}
			link.attr('done', 1);
			socket.emit('topics.checkLink', link.attr('href'), function(err, result) {
				if(result) {
					$('<i class="fa fa-chain" style="vertical-align:super; font-size:12px;"></i>').insertAfter(link);
				} else {
					$('<i class="fa fa-chain-broken" style="vertical-align:super; font-size:12px;"></i>').insertAfter(link);
				}

			});
		});
	}