[gtranslator] Updated About dialog

[Daniel Garcia Moreno <danigm src gnome org>]

commit 5e941c25de56bfd09f94743ef0c51a8310cb7e2a
Author: Daniel Mustieles <daniel mustieles gmail com>
Date:   Wed Oct 3 12:48:32 2018 +0200

    Updated About dialog

 src/gtr-actions-app.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)
---
diff --git a/src/gtr-actions-app.c b/src/gtr-actions-app.c
index 27ba156e..725c3d77 100644
--- a/src/gtr-actions-app.c
+++ b/src/gtr-actions-app.c
@@ -49,13 +49,10 @@ gtr_about_dialog (GtrWindow *window)
     "------------------------",
     "Daniel Garcia Moreno <danigm gnome org>",
     "",
-    N_("Current Developers"),
+    N_("Previous Developers"),
     "------------------------",
     "Seán de Búrca <leftmostcat gmail com>",
     "Ignacio Casal Quinteiro <icq gnome org>",
-    "",
-    N_("Previous Developers"),
-    "------------------------",
     "Pablo Sanxiao <psanxiao gnome org>",
     "Fatih Demir <kabalak kabalak net> (Founder)",
     "Ross Golder <ross golder org>",
@@ -76,6 +73,7 @@ gtr_about_dialog (GtrWindow *window)
     NULL
   };
   static const gchar *documenters[] = {
+    "GNOME Documentation Project",
     "Abel Cheung <deaddog deaddog org>",
     "Emese Kovacs <emese gnome hu>",
     "Pablo Sanxiao <psanxiao gnome org>",