Inline CSS on message view, and do error handling on refresh.

web/index.html

@@ -45,6 +45,25 @@ iframe {
 .tag {
   margin-right: 2px;
 }
+.debug ul {
+  padding-left: 2em;
+}
+.debug li {
+}
+.loading {
+  animation-name: spin;
+  animation-duration: 1000ms;
+  animation-iteration-count: infinite;
+  animation-timing-function: linear;
+}
+    @keyframes spin {
+      from {
+        transform:rotate(0deg);
+      }
+      to {
+        transform:rotate(360deg);
+      }
+    }
 </style>
 </head>