feature/mobile-layout (#431)

* lazy load cards

* shopping list recipe search bug

* admin layout fluid

* site loader

* username support

* mobile tabs

* set username at signup

* update user tests

* patch bug on shopping list

* public mealplan links

* support link (I'm a monster)

* icon only on mobile

* padding

Co-authored-by: hay-kot <hay-kot@pm.me>

frontend/src/locales/messages/en-US.json

@@ -377,6 +377,7 @@
     "untagged-count": "Untagged {count}"
   },
   "user": {
+    "username": "Username",
     "admin": "Admin",
     "are-you-sure-you-want-to-delete-the-link": "Are you sure you want to delete the link <b>{link}<b/>?",
     "are-you-sure-you-want-to-delete-the-user": "Are you sure you want to delete the user <b>{activeName} ID: {activeId}<b/>?",