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/tools.js

@@ -0,0 +1,36 @@
+import $ from 'jquery';
+
+function initFilters() {
+  // no display if filters not available
+  if ($('div').is('#filters')) {
+    $('#button_filters').show();
+    $('.js-filters-action').sideNav({ edge: 'right' });
+    $('#clear_form_filters').on('click', () => {
+      $('#filters input').val('');
+      $('#filters :checked').removeAttr('checked');
+
+      return false;
+    });
+  }
+}
+
+function initExport() {
+  // no display if export not available
+  if ($('div').is('#export')) {
+    $('#button_export').show();
+    $('.js-export-action').sideNav({ edge: 'right' });
+  }
+}
+
+function initRandom() {
+  // no display if export (ie: entries) not available
+  if ($('div').is('#export')) {
+    $('#button_random').show();
+  }
+}
+
+export {
+  initExport,
+  initFilters,
+  initRandom,
+};