Display username 'System' for system messages

web/sass-files/sass/partials/_post.scss

@@ -373,10 +373,6 @@ body.ios {
         background-color: beige;
     }
 
-	&.post--system .post__header .col__name {
-		display: none;
-	}
-
 	ul {
 		margin: 0;
 		padding: 0;