Stop recipient address wrapping to multiple lines

Stops the sticky footer getting too tall. Added a title attribute so
people can hover and see the whole thing if they really need to.

app/assets/stylesheets/views/send.scss

@@ -5,3 +5,9 @@
   }
 
 }
+
+.send-recipient {
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}