#99 Admin backend cleanup

* removes admin backend views which are not important for production
* adds filtering functionalities on index views
* simplifies detail views on intervention, compensation, ecoaccount and ema
* adds autocomplete fields on detail views
* adds handy horizontal filter fields on detail views

compensation/models/eco_account.py

@@ -46,7 +46,7 @@ class EcoAccount(AbstractCompensation, ShareableObjectMixin, RecordableObjectMix
     objects = EcoAccountManager()
 
     def __str__(self):
-        return "{}".format(self.identifier)
+        return f"{self.identifier} ({self.title})"
 
     def clean(self):
         # Deductable surface can not be larger than added states after surface