added 'aktiv' to dokument (so people can play around with standards)

dokumente/models.py

@@ -47,6 +47,7 @@ class Dokument(models.Model):
     gueltigkeit_bis = models.DateField(null=True, blank=True)
     signatur_cso = models.CharField(max_length=255, blank=True)
     anhaenge = models.TextField(blank=True)
+    aktiv = models.BooleanField(blank=True)
 
     def __str__(self):
         return f"{self.nummer} – {self.name}"