Finish packaging and change to src-based packaging layout, replace caddy with haproxy for performance, and update docker-compose and Dockerfiles for new packaging.

theme/templates/500.html

@@ -1,10 +0,0 @@
-{% extends 'base.html' %}
-{% block title %}500 Server Error{% endblock title %}
-
-{% block content %}
-<div class="container mx-auto max-w-md mt-12 text-center">
-  <h1 class="text-5xl font-bold mb-4">500</h1>
-  <p class="text-xl mb-4">Looks like something went wrong!</p>
-  <a href="{% url 'home' %}" class="btn btn-primary">Return Home</a>
-</div>
-{% endblock content %}