Subscribe endpoint consolidation; same behavior for all endpoints; keepalive

server/static/css/app.css

@@ -40,6 +40,10 @@ p {
     line-height: 140%;
 }
 
+p.smallMarginBottom {
+    margin-bottom: 10px;
+}
+
 tt {
     background: #eee;
     padding: 2px 7px;
@@ -53,7 +57,7 @@ code {
     padding: 20px;
     border-radius: 3px;
     margin-top: 10px;
-    margin-bottom: 10px;
+    margin-bottom: 20px;
 }
 
 /* Lato font (OFL), https://fonts.google.com/specimen/Lato#about,

server/static/js/app.js

@@ -60,7 +60,7 @@ const subscribeInternal = (topic, delaySec) => {
         eventSource.onmessage = (e) => {
             const event = JSON.parse(e.data);
             notifySound.play();
-            new Notification(topic, {
+            new Notification(`${location.host}/${topic}`, {
                 body: event.message,
                 icon: '/static/img/favicon.png'
             });