admin: Lots of fixes for running the admin panel in a WSGI server. - Use new source APIs in the dashboard to open WIP files. - Fixed broken/outdated code in some views. - Fixed cases when Flask is not running at the root URL by using the `SCRIPT_NAME` variable somewhat more properly.

{% extends "default.html" %}

{% block content %}
<div class="container">
    <section class="col-md-8">
    {{ content|safe }}
    </section>
    <aside class="col-md-4">
        {% include 'inc/family-sidebar.html' %}
    </aside>
</div>
{% endblock %}