[gnome-tweak-tool] replace notify_error by notify_information

[Alex Rodrigo Muñoz Domínguez <amunoz src gnome org>]

commit 67cda040a8e0aac288e108d3e9d0db5006c6cf5b
Author: Alex Muñoz <alexmudoz gmail com>
Date:   Tue Nov 5 11:53:49 2013 -0300

    replace notify_error by notify_information
    
    https://bugzilla.gnome.org/show_bug.cgi?id=711490

 gtweak/tweaks/tweak_group_shell_extensions.py |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gtweak/tweaks/tweak_group_shell_extensions.py b/gtweak/tweaks/tweak_group_shell_extensions.py
index 58018ce..bbd4788 100644
--- a/gtweak/tweaks/tweak_group_shell_extensions.py
+++ b/gtweak/tweaks/tweak_group_shell_extensions.py
@@ -261,12 +261,12 @@ class _ShellExtensionInstallerTweak(Gtk.Box, Tweak):
                         self._shell.restart)
 
                 else:
-                    self.notify_error(_("Error installing extension"))
+                    self.notify_information(_("Error installing extension"))
 
 
             except:
                 #does not look like a valid theme
-                self.notify_error(_("Invalid extension"))
+                self.notify_information(_("Invalid extension"))
                 logging.warning("Error parsing theme zip", exc_info=True)
 
         #set button back to default state