Allow entrances to be edited with the correct parent url. Commit changes to caves when adding a new entrance. Order entrances alphabetically

templates/editentrance.html

@@ -8,8 +8,12 @@
 <h1>Edit Entrance - at cave {{cave.official_name|safe}} - {{cave.kataster_number}}</h1>
 {% include 'html_editor_pop_ups.html' %}
 <h2>{{message}}</h2>
-<p>{{entletter}}
 <form action="" method="post">{% csrf_token %}
+    {% if entlettereditable %}
+      <table>{{ entletter }}</table>
+    {% else %}
+      <table><tr><th>Entrance Letter</th><td>{{ entletter }}</td></table>
+    {% endif %}
     <table>{{ form }}</table>
     {{ versionControlForm }}
     <p><input type="submit" value="Submit" /></p>