Add missing template

journals/templates/journals/crossmark_policy.html

+{% extends 'scipost/base.html' %}
+
+{% block pagetitle %}: SciPost Journals: Crossmark Policy{% endblock pagetitle %}
+
+{% load staticfiles %}
+
+{% block content %}
+
+
+<hr>
+<div class="row">
+  <div class="col-12">
+      <h2 id="Crossmark Policy">Crossmark Policy</h2>
+      <p><a href="https://www.crossref.org/services/crossmark/">Crossmark</a> is a multi-publisher initiative from Crossref to provide a standard way for readers to locate the current version of a piece of content.</p>
+      <p>By applying the Crossmark logo SciPost is committing to maintaining the content it publishes and to alerting readers to changes if and when they occur. Clicking on the Crossmark logo will tell you the current status of a document and may also give you additional publication record information about the document.</p>
+      <p>Please refer to our <a href="{% url 'journals:journals_terms_and_conditions' %}">Journals Terms and Conditions</a> for details about our Corrections and Retractions policy.</p>
+  </div>
+</div>
+
+{% endblock content %}