Stop published date from wrapping on android.

In particular, the date would be wrapped while unread, then unwrapped
when read, causing a jump that was distracting and made double-clicking
harder.

frontends/bringrss_flask/templates/root.html

@@ -268,6 +268,7 @@ body
 {
     grid-area: published;
     align-self: center;
+    white-space: nowrap;
 }
 #news .news .title
 {