add userboxes and use them instead of flash

static/style.css

@@ -245,3 +245,25 @@ input[type=text], input[type=password] {
   box-sizing: border-box;
   background-color: rgb(229.84, 231.92, 227.28);
 }
+
+.infobox {
+  border: 2px solid black;
+  background-color: #c1ceb1;
+  padding: 20px 15px;
+}
+.infobox.critical {
+  background-color: rgb(237, 129, 129);
+}
+.infobox.warn {
+  background-color: #fbfb8d;
+}
+
+.infobox > span {
+  display: flex;
+  align-items: center;
+}
+
+.infobox-icon-container {
+  min-width: 60px;
+  padding-right: 15px;
+}