Fix signals

Signed-off-by: Mark Hymers <mhy@debian.org>

bin/nafEpochViewer

@@ -1311,7 +1311,8 @@ class EpochViewerApp(QtWidgets.QMainWindow, Ui_EpochViewerApp):
             else:
                 self.setup_tab_study(filename, op=op)
 
-        self.action_Open.triggered.connect(self.open_dialog)
+        self.action_OpenStudy.triggered.connect(self.open_study_dialog)
+        self.action_OpenHDF5.triggered.connect(self.open_hdf5_dialog)
         self.action_Close.triggered.connect(self.close_tab)
         self.action_Quit.triggered.connect(self.close)