Adjust pipeline setup

Should probably do some caching of node_modules so we don't have to do npm i for both the linting and test parts.

frontend/public/locales/en/common.json

@@ -5,5 +5,6 @@
   },
   "language": {
     "change": "Change language to {{lang}}"
-  }
+  },
+  "loading": "Loading..."
 }