#38 User requests

* implements 5) "Add 'Maßnahmentyp' for KOMs "
    * prepares model and form fields as mixins for easy extension to eco accounts and emas (possibly in the future?)

compensation/models.py

@@ -189,7 +189,37 @@ class AbstractCompensation(BaseObject):
         return checker
 
 
-class Compensation(AbstractCompensation):
+class CEFMixin(models.Model):
+    """ Provides CEF flag as Mixin
+
+    """
+    is_cef = models.BooleanField(
+        blank=True,
+        null=True,
+        default=False,
+        help_text="Flag if compensation is a 'CEF-Maßnahme'"
+    )
+
+    class Meta:
+        abstract = True
+
+
+class CoherenceMixin(models.Model):
+    """ Provides coherence keeping flag as Mixin
+
+    """
+    is_coherence_keeping = models.BooleanField(
+        blank=True,
+        null=True,
+        default=False,
+        help_text="Flag if compensation is a 'Kohärenzsicherung'"
+    )
+
+    class Meta:
+        abstract = True
+
+
+class Compensation(AbstractCompensation, CEFMixin, CoherenceMixin):
     """
     Regular compensation, linked to an intervention
     """