po/POTFILES.in: Add missing source files

We forgot to add these when splitting existing or creating new source
files.

Signed-off-by: Lukas Fleischer <calcurse@cryptocrack.de>

po/POTFILES.in

@@ -3,18 +3,28 @@ src/apoint.c
 src/args.c
 src/calcurse.c
 src/calendar.c
+src/config.c
 src/custom.c
 src/day.c
+src/dmon.c
 src/event.c
+src/getstring.c
 src/help.c
+src/ical.c
 src/io.c
+src/keys.c
+src/llist.c
+src/mem.c
+src/note.c
 src/notify.c
+src/pcal.c
 src/recur.c
+src/sha1.c
 src/sigs.c
 src/todo.c
+src/utf8.c
 src/utils.c
 src/vars.c
 src/wins.c
-src/dmon.c
 
 scripts/calcurse-upgrade.sh