Intervention tables and model adjustments

* adds user access relation to certain models
* adds pagination to tables
* adds checked_on/_by attributes to intervention model
* adds custom column rendering for checked and registered columns
* adds first simple index filtering of default interventions for user
* adds translations

intervention/models.py

@@ -33,22 +33,29 @@ class Intervention(BaseObject):
     geometry = models.ForeignKey(Geometry, null=True, blank=True, on_delete=models.SET_NULL)
     documents = models.ManyToManyField("konova.Document", blank=True)
 
+    # Checks
+    checked_on = models.DateTimeField(default=None, null=True, blank=True)
+    checked_by = models.ForeignKey(User, null=True, blank=True, on_delete=models.SET_NULL, related_name='+')
+
     # Refers to "zugelassen am"
     registration_date = models.DateField(null=True, blank=True)
 
     # Refers to "Bestandskraft am"
-    binding_date = models.DateField(null=True, blank=True)
+    binding_on = models.DateField(null=True, blank=True)
 
     # Refers to "verzeichnen"
-    recorded_on = models.DateTimeField(default=None)
-    recorded_by = models.ForeignKey(User, null=True, blank=True, on_delete=models.SET_NULL)
+    recorded_on = models.DateTimeField(default=None, null=True, blank=True)
+    recorded_by = models.ForeignKey(User, null=True, blank=True, on_delete=models.SET_NULL, related_name='+')
 
     # Holds which intervention is simply a newer version of this dataset
-    next_version = models.ForeignKey("Intervention", null=True, on_delete=models.DO_NOTHING)
+    next_version = models.ForeignKey("Intervention", null=True, blank=True, on_delete=models.DO_NOTHING)
 
     # Compensation or payments, one-directional
-    payments = models.ManyToManyField(Payment, related_name="+")
-    compensations = models.ManyToManyField(Compensation, related_name="+")
+    payments = models.ManyToManyField(Payment, related_name="+", blank=True)
+    compensations = models.ManyToManyField(Compensation, related_name="+", blank=True)
+
+    # Users having access on this object
+    users = models.ManyToManyField(User)
 
     def delete(self, *args, **kwargs):
         """ Custom delete functionality