add group to track feature

src/epicure/outputing.py

@@ -776,8 +776,12 @@ class Outputing(QWidget):
             track_ids = track_ids.tolist()
         if not type(track_ids) == list:
             track_ids = [track_ids]
+
+        labgroups = self.epicure.group_of_labels()
+        frame_group = [ labgroups[label] if label in labgroups.keys() else "Ungrouped" for label in track_ids ]
         for itrack, track_id in progress(enumerate(track_ids)):
             track_frame = self.measure_one_track( track_id )
+            track_frame["Group"] = frame_group[itrack]
             if self.table is None:
                 self.table = pand.DataFrame([track_frame])
             else: