[gnome-control-center] Update POTFILES.in

[Piotr Drąg <piotrdrag src gnome org>]

commit 620b3f57b5b03467d59a0ac34ae562e317a84713
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Wed Jan 30 17:27:07 2019 +0100

    Update POTFILES.in

 po/POTFILES.in | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/po/POTFILES.in b/po/POTFILES.in
index f5ba54f55..691c8c880 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -34,6 +34,8 @@ panels/datetime/middle.ui
 panels/datetime/org.gnome.controlcenter.datetime.policy.in
 panels/datetime/ydm.ui
 panels/display/cc-display-panel.c
+panels/display/cc-display-panel.ui
+panels/display/cc-display-settings.c
 panels/display/cc-night-light-dialog.ui
 panels/display/gnome-display-panel.desktop.in.in
 panels/info/cc-info-default-apps-panel.ui