UI (#15)

Adding new Admin UI. Updating Fredy to V3.0.0 as it has been a large rewrite. Thanks for all contributions and help on the way!

ui/src/components/toasts/ToastContainer.js

@@ -0,0 +1,12 @@
+import Toast from './Toast';
+import React from 'react';
+
+export default function ToastsContainer({ toasts, onToastFinished }) {
+  return (
+    <div className="toasts-container">
+      {toasts.map((toast, index) => (
+        <Toast key={index} {...toast} onHide={onToastFinished} />
+      ))}
+    </div>
+  );
+}