Adding all templates and rendering for peer and self assessment.

apps/openassessment/templates/openassessmentblock/peer/oa_peer_assessment_collapsed.html

+{%  extends "openassessmentblock/peer/oa_peer_assessment.html" %}
+{% block list_item %}
+    <li id="openassessment__peer-assessment" class="openassessment__steps__step step--peer-assessment is--collapsed ui-toggle-visibility">
+{% endblock %}
+{% block body %}
+{% endblock %}