Move to Symfony Flex

The structure changed completely.
Bundles are gone. Everything is flatten in the folder `src`.
I separated import & api controllers to avoid _pollution_ in the main controller folder.

assets/themes/material/js/shortcuts/entry.js

@@ -0,0 +1,26 @@
+import Mousetrap from 'mousetrap';
+import $ from 'jquery';
+
+$(document).ready(() => {
+  if ($('#article').length > 0) {
+    /* open original article */
+    Mousetrap.bind('o', () => {
+      $('ul.side-nav a.original i')[0].click();
+    });
+
+    /* mark as favorite */
+    Mousetrap.bind('f', () => {
+      $('ul.side-nav a.favorite i')[0].click();
+    });
+
+    /* mark as read */
+    Mousetrap.bind('a', () => {
+      $('ul.side-nav a.markasread i')[0].click();
+    });
+
+    /* delete */
+    Mousetrap.bind('del', () => {
+      $('ul.side-nav a.delete i')[0].click();
+    });
+  }
+});