Don't fade when subject box is empty.

Otherwise it fades all messages.

Trac #1468

(imported from commit 393514f9f3b2b7f46945878d93e8c12e4685afeb)

zephyr/static/js/compose.js

@@ -96,6 +96,11 @@ exports.update_faded_messages = function () {
         return;
     }
 
+    if (focused_recipient.type === "stream" && focused_recipient.subject === "") {
+        exports.unfade_messages();
+        return;
+    }
+
     var i;
     var fade_class = narrow.active() ? "message_reply_fade_narrowed" : "message_reply_fade";