get events on same date.progress.

templates/svxfile.html

@@ -82,7 +82,8 @@ LOGMESSAGES
 </div>
 <span style="font-family: monospace;  font-size: 130%; ">
 {% for sb in svxblocks %}
-<details {% if forloop.first %} open{% endif %}><summary><b>{{sb.date|date:"Y-m-d"}}</b> {{sb.title}} '{{sb.name}}'</summary>
+<details {% if forloop.first %} open{% endif %}>
+<summary><b><a href="/expedition/{{sb.date|date:"Y"}}">{{sb.date|date:"Y"}}</a>{{sb.date|date:"-m-d"}}</b> {{sb.title}} '{{sb.name}}'</summary>
 List of Logbook entries, wallets and other survex files on {{sb.date|date:"Y-m-d"}}.
 <br />
 [Work in progress, Feb. 2023...]<br />