EMA

* fixes created timestamp in detail views where modified needs to be displayed
* adds fallback timestamp if data has not been edited, yet --> show created timestamp
* fixes bug where deleting of certain data didn't redirect to the index view
* adds quality_check() method for EMA, needed for recording
* adds all functions which are provided for compensations to EMA
* adds/updates translations

ema/models.py

@@ -72,3 +72,15 @@ class Ema(AbstractCompensation):
             x,
             y,
         )
+
+    def quality_check(self) -> list:
+        """ Quality check
+
+        Returns:
+            ret_msgs (list): Holds error messages
+        """
+        ret_msgs = []
+
+        # ToDo: Add check methods!
+
+        return ret_msgs