Overriding the background of all links on the page can have unexpected
results, for example causing the "Enlarge" icons under thumbnails to
disappear when the entire page is wrapped in <div class="plainlinks">.
https://en.wikipedia.org/wiki/Wikipedia:Wikipedia_Signpost/2014-08-27/In_the_media
Change-Id: I6fb15c5de39419993d37d9f5dd31ecb7ae6503fa
/* Plainlinks - this can be used to switch
* off special external link styling */
-.plainlinks a {
+.plainlinks a.external {
background: none !important;
padding: 0 !important;
}