EMA Filter

* refactors EmaTableFilter to inherit from EcoAccountFilter
* refactors messages for recording/unrecording of EMA
* adds/updates translations

ema/views.py

@@ -167,10 +167,11 @@ def record_view(request: HttpRequest, id: str):
 
     """
     ema = get_object_or_404(Ema, id=id)
+    msg_succ = _("{} unrecorded") if ema.recorded else _("{} recorded")
     form = RecordForm(request.POST or None, instance=ema, user=request.user)
     return form.process_request(
         request=request,
-        msg_success=_("EMA recorded"),
+        msg_success=msg_succ.format("EMA"),
     )