Move d3 to package.json and include I18n JS library though Gemfile

Also, update bundle to make it installable again (a version had been removed)

app/javascript/packs/application.js

@@ -13,7 +13,9 @@ import 'bootstrap/dist/js/bootstrap.bundle.min';
 import 'chosen-js/chosen.jquery';
 import 'jstree';
 import 'underscore';
+import 'd3'
 window._ = _; // Publish underscore's `_` in global namespace
+window.d3 = d3; // Publish d3 in global namespace
 
 // CSS
 import 'chosen-js/chosen.css';