Added page-note about missing env profile previews.

templates/manage/environment/profiles.html

@@ -2,6 +2,11 @@
 
 {% block page-status %}incomplete{% endblock %}
 
+{% block page-notes %}
+{{ block.super }}
+<p>Environment profile previews disabled temporarily; can't fetch needed details efficiently from platform.</p>
+{% endblock %}
+
 {% block listcontent %}
 <section id="manageprofiles">
   <h2>Manage Environment Profiles</h2>