Fixing #230; add a scrollbar to the PM popup dialog if necessary. This wasn't as easy as I thought. Had to wrap the PM text in a div with its styling (max-height and overflow). If I then resized the dialog, I'd get two scrollbars. So for now, made the dialog non-resizable.

{% extends 'base.html' %}
{% block custom_css %}
<link rel="stylesheet" type="text/css" href="{{ STATIC_URL }}css/bio.css" />
{% block bio_css %}{% endblock %}
{% endblock %}
{% block content %}
{% endblock %}