[shotwell] i18n: Disambiguate string "Add Tags"

[Jens Georg <jensgeorg src gnome org>]

commit 80eb7957dc86b19f1b977ba810e7cc8a3f57514d
Author: Jens Georg <mail jensge org>
Date:   Sun Jul 3 11:50:30 2016 +0200

    i18n: Disambiguate string "Add Tags"
    
    Signed-off-by: Jens Georg <mail jensge org>
    
    https://bugzilla.gnome.org/show_bug.cgi?id=744255

 src/Resources.vala |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/Resources.vala b/src/Resources.vala
index edac16d..b38608a 100644
--- a/src/Resources.vala
+++ b/src/Resources.vala
@@ -315,7 +315,7 @@ along with Shotwell; if not, write to the Free Software Foundation, Inc.,
     public const string ADD_TAGS_MENU = _("Add _Tags...");
     public const string ADD_TAGS_CONTEXT_MENU = _("_Add Tags...");
     // Dialog title
-    public const string ADD_TAGS_TITLE = _("Add Tags");
+    public const string ADD_TAGS_TITLE = NC_("Dialog Title", "Add Tags");
 
     public const string PREFERENCES_MENU = _("_Preferences");
     
@@ -348,7 +348,7 @@ along with Shotwell; if not, write to the Free Software Foundation, Inc.,
                 HierarchicalTagUtilities.get_basename(names[1]));
         } else {
             // Undo/Redo command name (in Edit menu)
-            return _("Add Tags");
+            return C_("UndoRedo menu entry", "Add Tags");
         }
     }