Various smaller changes

frontend/public/locales/en/common.json

@@ -8,8 +8,8 @@
   },
   "fnr": "National identity number",
   "header": {
-    "applicationTitleShort": "GREG",
-    "applicationTitleLong": "Guest Registration",
+    "applicationTitle": "Guest Registration",
+    "applicationDescription": "Registration service for guests",
     "selectLanguage": "Select language"
   },
   "loading": "Loading...",