feat(settings/user/userName): implement

i18n/locales/en.json

@@ -59,8 +59,14 @@
         "description": "This is my birthday.",
         "confirmation": {
           "today": "Yes, it's today!",
-          "future": "Don’t forget to wish me in {days} days!"
+          "future": "Don't forget to wish me in {days} days!"
         }
+      },
+      "userName": {
+        "title": "User Name",
+        "description": "My user name and first name.",
+        "userName": "User Name",
+        "firstName": "First Name"
       }
     },
     "touchScreen": {