Add home dashboard and Mithril rendering support

- Create new home route with comprehensive dashboard statistics
- Implement Mithril rendering support with new `mithril_loader.html` template
- Add new routes for home and test pages in `app.py`
- Create `lib/mithril.py` with Mithril rendering and error handling utilities
- Update dashboard template to use new home route
- Add detailed dashboard view with timer and HTTP function statistics

templates/mithril_loader.html

@@ -0,0 +1,11 @@
+{% extends 'base.html' %}
+
+{% block content %}
+
+<div id="mithril-loader"></div>
+<script>
+    m.mount(document.getElementById('mithril-loader'), {
+        view: () => m(DiffView, {{ props | tojson | safe }})
+    });
+</script>
+{% endblock %}