Two columns on view page.

sourcing/templates/view.html

@@ -66,6 +66,9 @@
   <p>Revision as of {{ version.modified.strftime('%H:%M, %d %B %Y') }}</p>
 {% endif %}
 
+<div class="row">
+<div class="col-md-6">
+
 <div class="card mb-2 px-2" id="text">
 <div class="card-block">
 {% if span_length %}
@@ -97,6 +100,15 @@
   <button id="select-all" class="btn btn-primary">get entire document span</button>
   <p id="span-selector" class="d-none">span: <span id="span"></span></p>
 {% endif %}
+
+</div>
+<div class="col-md-6">
+  <h4>references</h4>
+  <ul>
+  </ul>
+</div>
+</div>
+
 {% endblock %}
 
 {% block scripts %}