enabled mugshots & blurb in people pages

templates/svxcavesingle.html

@@ -5,7 +5,7 @@
 {% block content %}
 
 {% autoescape off %}
-<h1>Surveys for <a href="/{{cave.url}}">{{cave.official_name}}</a> - identifier:{{cave}}</h1>
+<h1>Surveys for <a href="/{{cave.url}}">{{cave.official_name}}</a> - id:{{cave}}</h1>
 {% endautoescape %}
 <!-- the only thing passed into this template is the object identifier for a cave.
 All the processing to extract the survex subdriectories and survex files is done in this template -->
@@ -17,7 +17,10 @@ All the processing to extract the survex subdriectories and survex files is done
  <a href="#T_{{survexdirectory.primarysurvexfile.path}}">{{survexdirectory.path}}</a> 
     {% empty %}
     <p>If you were expecting to see a list of survex files here and a summary table of who did what and when, perhaps
-    because you followed a link from <a href="/survexfile/caves/">the master caves' survex list</a> page which showed that such survex files clearly existed, and yet there is nothing here but a blank; then this will be because the survex (.svx) files have been stored on the server in the 
+    because you followed a link from <a href="/survexfile/caves/">the master caves' survex list</a> page which showed that such survex files clearly existed, and yet there is nothing here but a blank; then this will be because <br>
+    [a] - this cave has no survex survey files at all, or <br>
+    [b] - you have run a 'caves' parsing import after running a 'survex' import and the survex data has been blanked out, or <br>
+    [c] - the survex (.svx) files have been stored on the server in the 
     <a href="/handbook/computing/repos.html"><var>:loser:</var></a> repository 
     but whoever was 
     responsible has not yet created the appropriate entries in the XML file in the