Fix /crates/$crate_id

fastboot/initializers/ajax.js

@@ -0,0 +1,8 @@
+export default {
+  name: 'ajax-service',
+  initialize() {
+    // This is to override Fastboot's initializer which prevents ember-fetch from working
+    // https://github.com/ember-fastboot/ember-cli-fastboot/blob/master/fastboot/initializers/ajax.js
+    // https://github.com/ember-cli/ember-fetch#ajax-service
+  },
+};