[baobab] Use Unicode in translatable strings

[Stefano Facchini <sfacchini src gnome org>]

commit 7686df0461eb9ce8d4c320800315ea9d76c02a7f
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Sun Nov 6 14:29:39 2016 +0100

    Use Unicode in translatable strings
    
    See https://developer.gnome.org/hig/stable/typography.html
    
    https://bugzilla.gnome.org/show_bug.cgi?id=773998

 src/baobab-window.vala |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/src/baobab-window.vala b/src/baobab-window.vala
index a1b9b52..e67c4ee 100644
--- a/src/baobab-window.vala
+++ b/src/baobab-window.vala
@@ -543,10 +543,10 @@ namespace Baobab {
                     scanner.get_iter_first (out iter);
                     scanner.get (iter, Scanner.Columns.STATE, out state);
                     if (state == Scanner.State.ERROR) {
-                        var primary = _("Could not scan folder \"%s\"").printf 
(scanner.directory.get_parse_name ());
+                        var primary = _("Could not scan folder “%s”").printf 
(scanner.directory.get_parse_name ());
                         message (primary, e.message, Gtk.MessageType.ERROR);
                     } else {
-                        var primary = _("Could not scan some of the folders contained in \"%s\"").printf 
(scanner.directory.get_parse_name ());
+                        var primary = _("Could not scan some of the folders contained in “%s”").printf 
(scanner.directory.get_parse_name ());
                         message (primary, e.message, Gtk.MessageType.WARNING);
                     }
                 }
@@ -582,13 +582,13 @@ namespace Baobab {
             var location = new Location.for_file (directory, flags);
 
             if (location.info == null) {
-                var primary = _("\"%s\" is not a valid folder").printf (directory.get_parse_name ());
+                var primary = _("“%s” is not a valid folder").printf (directory.get_parse_name ());
                 message (primary, _("Could not analyze disk usage."), Gtk.MessageType.ERROR);
                 return;
             }
 
             if (location.info.get_file_type () != FileType.DIRECTORY/* || is_virtual_filesystem ()*/) {
-                var primary = _("\"%s\" is not a valid folder").printf (directory.get_parse_name ());
+                var primary = _("“%s” is not a valid folder").printf (directory.get_parse_name ());
                 message (primary, _("Could not analyze disk usage."), Gtk.MessageType.ERROR);
                 return;
             }