cache tidy and move settings into parser

core/views/logbooks.py

@@ -215,6 +215,7 @@ def logbookentry(request, date, slug):
          
             this_logbookentry=this_logbookentry[0]
             # This is the only page that uses presontrip_next and persontrip_prev
+            # and it is calculated on the fly in the model 
             return render(request, 'logbookentry.html', 
                 {'logbookentry': this_logbookentry, 'trips': trips, 'svxothers': svxothers, 'wallets': wallets})
     else: