Fix ubl-settings-datetime.desktop

ubl-settings-datetime.desktop

@@ -10,6 +10,8 @@ Type=Application
 Exec=pkexec ubl-settings-datetime
 Icon=com.ublinux.ubl-settings-datetime
 Terminal=false
+StartupNotify=true
+StartupWMClass=ubl-settings-datetime
 X-XfcePluggable=true
 X-UBLPluggable=true
 Categories=XFCE;GTK;Settings;DesktopSettings;X-XFCE-SettingsDialog;X-XFCE-SystemSettings;X-UBL-SettingsManager;X-UBL-SystemSettings;