aider: Removed default filter from page.html template and ensured…

… correct passing of `title` variable.

# Aider chat conversation:

USER: Error: Failed to serve the site
Error: Error parsing templates from the /templates directory
Error: Reason:
* Failed to parse "/home/ian/code/freenet/web/templates/page.html"
 --> 3:42
  |
3 | {% block title %}{{ page.title | default("No Title") }}{% endblock %}
  |                                          ^---
  |
  = expected an identifier (must start with a-z)

ASSISTANT: The error indicates that the `default` filter is not recognized in the context of the template engine being used. We need to ensure that the `title` variable is correctly passed to the template.

Let's update the `page.html` template to remove the `default` filter and ensure that the `title` variable is correctly passed.

Here are the *SEARCH/REPLACE* blocks:

templates/page.html
```python
<<<<<<< SEARCH
{% block title %}{{ page.title | default("No Title") }}{% endblock %}
=======
{% block title %}{{ page.title }}{% endblock %}
>>>>>>> REPLACE
```

This change removes the `default` filter and directly uses `page.title`. If `page.title` is not set, it will result in an empty title, but it will avoid the parsing error.

templates/page.html

@@ -1,6 +1,6 @@
 {% extends "base.html" %}
 
-{% block title %}{{ page.title | default("No Title") }}{% endblock %}
+{% block title %}{{ page.title }}{% endblock %}
 
 {% block content %}
 <article class="content">