[shotwell] Update POTFILES.in and POTFILES.skip

[Piotr Drąg <piotrdrag src gnome org>]

commit ac668702d58de59368cc2f96e25adf08e2020d1a
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Wed Mar 28 19:55:08 2018 +0200

    Update POTFILES.in and POTFILES.skip

 po/POTFILES.in   |    1 +
 po/POTFILES.skip |    1 +
 2 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/po/POTFILES.in b/po/POTFILES.in
index fb03e9e..ab72398 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -93,6 +93,7 @@ src/MediaPage.vala
 src/Page.vala
 src/PhotoPage.vala
 src/photos/BmpSupport.vala
+src/photos/GifSupport.vala
 src/photos/JfifSupport.vala
 src/photos/PngSupport.vala
 src/photos/RawSupport.vala
diff --git a/po/POTFILES.skip b/po/POTFILES.skip
index b11b9d4..23e4d1c 100644
--- a/po/POTFILES.skip
+++ b/po/POTFILES.skip
@@ -75,6 +75,7 @@ src/Page.c
 src/Photo.c
 src/PhotoPage.c
 src/photos/BmpSupport.c
+src/photos/GifSupport.c
 src/photos/JfifSupport.c
 src/photos/PngSupport.c
 src/photos/RawSupport.c