remove non-kataster caves list

core/views/survex.py

@@ -754,6 +754,10 @@ def survexcavesingle(request, cave_shortname):
     the files and people.   
     
     But might also be a link to a single survex file with no ".svx" suffix, which may not be a cave.
+    
+    If cave_shortname=="" then it used to list all caves which did not have a kataser number,
+    an accident of coding. This now does not happen.
+    
     """
     if cave_shortname.startswith("caves-16"):
         return svx(request, cave_shortname)