[gnome-builder] application-actions: Update and clean the copyright string

[Christian Hergert <chergert src gnome org>]

commit 36ac4f5d17b341181428a4c9de7270d8bb8a2e7a
Author: Juraj Fiala <jurf riseup net>
Date:   Thu Jan 25 19:14:23 2018 +0000

    application-actions: Update and clean the copyright string
    
    This builds on Michael’s tremendous and greatly appreciated work.
    In the continued spirit I present a fix for the repeated issue of users
    having to read ‘Copyright Copyright’ when reading … the copyright. With
    this change that confusion and time waste will be a thing of the past,
    literally, as it will also move Builder into the fresh new age of 2018.
    
    AKA I’ve read Practical Typography so now I’m smart.

 src/libide/application/ide-application-actions.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/libide/application/ide-application-actions.c 
b/src/libide/application/ide-application-actions.c
index 2a8ca2562..609458572 100644
--- a/src/libide/application/ide-application-actions.c
+++ b/src/libide/application/ide-application-actions.c
@@ -141,7 +141,7 @@ ide_application_actions_about (GSimpleAction *action,
                          "artists", ide_application_credits_artists,
                          "authors", ide_application_credits_authors,
                          "comments", _("An IDE for GNOME"),
-                         "copyright", "Copyright © 2014–2017 Christian Hergert, et al.",
+                         "copyright", "© 2014–2018 Christian Hergert, et al.",
                          "documenters", ide_application_credits_documenters,
                          "license-type", GTK_LICENSE_GPL_3_0,
                          "logo-icon-name", "org.gnome.Builder",