Pull request #113: correctly open battery dialog

Merge in VECTO/vecto-dev from VECTO/mq_vecto-dev:bugfix/VECTO-1491-electric-energy-storage-editor-does-not-show-values to develop

* commit '7f1c6f18':
  correctly open battery dialog

VECTO/GUI/REESSPackDialog.vb

@@ -83,9 +83,13 @@ Public Class REESSPackDialog
             End If
         End If
 
-        if BatteryForm.ShowDialog() = DialogResult.OK then
-			tbBattery.Text = BatteryForm.BatteryFile
-        end if
+        if Not BatteryForm.Visible Then
+            BatteryForm.Show()
+        Else 
+            If BatteryForm.WindowState = FormWindowState.Minimized Then BatteryForm.WindowState = FormWindowState.Normal
+            BatteryForm.BringToFront()
+        End If
+
         If Not Trim(f) = "" Then
             Try
                 BatteryForm.OpenBatteryFile(f)