Prevent large images in comments from overflowing the meta box.

props mattheu.
fixes #26643.

git-svn-id: https://develop.svn.wordpress.org/trunk@27252 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-admin/css/dashboard.css

@@ -111,6 +111,10 @@ h3.dashboard-widget-title small a:hover {
 	word-wrap: break-word;
 }
 
+#the-comment-list td.comment img {
+	max-width: 100%;
+}
+
 /* Welcome Panel */
 .welcome-panel {
 	position: relative;