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/_global/js/tools.js

@@ -0,0 +1,36 @@
+import $ from 'jquery';
+import './shortcuts/main';
+import './shortcuts/entry';
+
+/* Allows inline call qr-code call */
+import jrQrcode from 'jr-qrcode'; // eslint-disable-line
+
+function supportsLocalStorage() {
+  try {
+    return 'localStorage' in window && window.localStorage !== null;
+  } catch (e) {
+    return false;
+  }
+}
+
+function savePercent(id, percent) {
+  if (!supportsLocalStorage()) { return false; }
+  localStorage[`wallabag.article.${id}.percent`] = percent;
+  return true;
+}
+
+function retrievePercent(id, resized) {
+  if (!supportsLocalStorage()) { return false; }
+
+  const bheight = $(document).height();
+  const percent = localStorage[`wallabag.article.${id}.percent`];
+  const scroll = bheight * percent;
+
+  if (!resized) {
+    $('html,body').animate({ scrollTop: scroll }, 'fast');
+  }
+
+  return true;
+}
+
+export { savePercent, retrievePercent };