[dconf-editor] Notify when no summary is provided.

[Arnaud Bonatti <arnaudb src gnome org>]

commit eb8ad4d397a8c8c1d09da0290f27c9762486f913
Author: Arnaud Bonatti <arnaud bonatti gmail com>
Date:   Sat Jan 7 07:25:10 2017 +0100

    Notify when no summary is provided.

 editor/key-list-box-row.vala |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)
---
diff --git a/editor/key-list-box-row.vala b/editor/key-list-box-row.vala
index cb26522..f3b283e 100644
--- a/editor/key-list-box-row.vala
+++ b/editor/key-list-box-row.vala
@@ -255,7 +255,13 @@ private class KeyListBoxRowEditable : KeyListBoxRow
     {
         Object (key: _key);
 
-        key_info_label.set_label (key.summary);
+        if (key.summary != "")
+            key_info_label.set_label (key.summary);
+        else
+        {
+            key_info_label.get_style_context ().add_class ("italic-label");
+            key_info_label.set_label (_("No summary provided"));
+        }
     }
 
     protected override void update ()