[polari] app: Update copyright property in About

[Florian Müllner <fmuellner src gnome org>]

commit b52d74bac45006b83bbf1cb1a4fa354d38e9b7b1
Author: Florian Müllner <fmuellner gnome org>
Date:   Wed Oct 14 01:28:33 2015 +0200

    app: Update copyright property in About
    
    Neither are all contributors employed by Red Hat anymore, nor is it
    still 2013 - update the copyright accordingly.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=756359

 src/application.js |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)
---
diff --git a/src/application.js b/src/application.js
index be772ac..f34ff46 100644
--- a/src/application.js
+++ b/src/application.js
@@ -449,8 +449,7 @@ const Application = new Lang.Class({
             ],
             translator_credits: _("translator-credits"),
             comments: _("An Internet Relay Chat Client for GNOME"),
-            copyright: 'Copyright ' + String.fromCharCode(0x00A9) // ©
-                                    + ' 2013 Red Hat, Inc.',
+            copyright: 'Copyright © 2013-2015 The Polari authors',
             license_type: Gtk.License.GPL_2_0,
             logo_icon_name: 'polari',
             version: pkg.version,