Restore vanilla components

app/javascript/mastodon/actions/modal.js

@@ -0,0 +1,16 @@
+export const MODAL_OPEN  = 'MODAL_OPEN';
+export const MODAL_CLOSE = 'MODAL_CLOSE';
+
+export function openModal(type, props) {
+  return {
+    type: MODAL_OPEN,
+    modalType: type,
+    modalProps: props,
+  };
+};
+
+export function closeModal() {
+  return {
+    type: MODAL_CLOSE,
+  };
+};