added parent is_productive field

templates/parents.html

@@ -3,8 +3,10 @@
 {% block title %}Parents{% endblock %}
 {% block element_name %}parent{% endblock %}
 {% block extra-head %}
+    <link rel="stylesheet" href="{% static "parents.css" %}">
     <script src="{% static "parents.js" %}"></script>
 {% endblock %}
+{% block extra-class %}{% if element.is_productive %}productive{% endif %}{% endblock %}
 {% block element %}
     <div class="name">{{ element.name }}</div>
     <div class="project_num">({{ element.project_num }})</div>