[evince] Update POTFILES.in

[Piotr Drąg <piotrdrag src gnome org>]

commit d0cb26e562a054263a573c461c2d6c0433e00e18
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Fri Nov 9 19:58:36 2018 +0100

    Update POTFILES.in

 po/POTFILES.in | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/po/POTFILES.in b/po/POTFILES.in
index 5f7b8abd..e75b0619 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -37,6 +37,7 @@ org.gnome.Evince.appdata.xml.in
 previewer/ev-previewer.c
 previewer/ev-previewer-toolbar.c
 previewer/ev-previewer-window.c
+previewer/previewer.ui
 properties/ev-properties-main.c
 properties/ev-properties-view.c
 shell/ev-annotation-properties-dialog.c
@@ -62,4 +63,4 @@ shell/ev-window.c
 shell/ev-window-title.c
 shell/ev-zoom-action.c
 shell/help-overlay.ui
-shell/main.c
\ No newline at end of file
+shell/main.c