Housekeeping

* Updated flowbite to 4.x
* Start revamping styles
* Remove unused GraphQL code
* Make some templates more robuts

games/templates/navbar.html

@@ -1,5 +1,5 @@
 {% load static %}
-<nav class="bg-white border-gray-200 dark:bg-gray-900 dark:border-gray-700">
+<nav class="bg-neutral-primary-soft border-b border-default">
     <div class="max-w-(--breakpoint-xl) flex flex-wrap items-center justify-between mx-auto p-4">
         <a href="{% url 'index' %}"
            class="flex items-center space-x-3 rtl:space-x-reverse">