[balsa] Add UI files to POTFILES.in

[Peter Bloomfield <peterb src gnome org>]

commit 9d05baf6d953bc3d1d7f4e675a0144d1f1ddf989
Author: Albrecht Dreß <albrecht dress arcor de>
Date:   Fri Aug 4 11:45:28 2017 -0400

    Add UI files to POTFILES.in
    
    Signed-off-by: Peter Bloomfield <PeterBloomfield bellsouth net>

 po/POTFILES.in |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/po/POTFILES.in b/po/POTFILES.in
index 35c7ff4..355a696 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -96,3 +96,8 @@ src/spell-check.c
 src/store-address.c
 src/toolbar-factory.c
 src/toolbar-prefs.c
+[type: gettext/glade]ui/ab-main.ui
+[type: gettext/glade]ui/main-window.ui
+[type: gettext/glade]ui/message-window.ui
+[type: gettext/glade]ui/sendmsg-window.ui
+[type: gettext/glade]ui/source-viewer.ui