Nicknames preserved, date checked

core/models/logbooks.py

@@ -106,6 +106,7 @@ class PersonLogEntry(TroggleModel):
     time_underground = models.FloatField(help_text="In decimal hours")
     logbook_entry = models.ForeignKey(LogbookEntry, on_delete=models.CASCADE)
     is_logbook_entry_author = models.BooleanField(default=False)
+    nickname_used = models.CharField(max_length=100,default="") # e.g. "Animal" or "Zonker", as it appears in the original logbook
 
     class Meta:
         ordering = ("-personexpedition",)