[gimp] NEWS, authors.xml: add the 2.10 splash author.

[Jehan Pagès <jehanp src gnome org>]

commit 04aff3d4ea0e02818a55e9c247c9cdb8d061f848
Author: Jehan <jehan girinstud io>
Date:   Thu Apr 26 00:58:31 2018 +0200

    NEWS, authors.xml: add the 2.10 splash author.
    
    See commit ea3de6d524.
    Also update the translation list in NEWS.

 NEWS        |    3 ++-
 authors.xml |    1 +
 2 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/NEWS b/NEWS
index b67ecbc..a6724fd 100644
--- a/NEWS
+++ b/NEWS
@@ -43,7 +43,8 @@ Assets / Resources:
 
 Translations:
 
-  - 4 translations were updated: Catalan, Danish, Polish, Swedish.
+  - 5 translations were updated: Catalan, Danish, Finnish, Polish,
+    Swedish.
 
 Overview of Changes from GIMP 2.10.0 RC1 to GIMP 2.10.0 RC2
 ===========================================================
diff --git a/authors.xml b/authors.xml
index 06e0699..b483d93 100644
--- a/authors.xml
+++ b/authors.xml
@@ -111,6 +111,7 @@
   <contributor role="author" last-active="2.8">Stephen Griffiths</contributor>
   <contributor role="author" last-active="1.2">Pavel Grinfeld</contributor>
   <contributor role="author" last-active="2.4">Dov Grobgeld</contributor>
+  <contributor role="artist" last-active="2.10">Philipp Haegi</contributor>
   <contributor role="author documenter" last-active="2.4">Michael Hammel</contributor>
   <contributor role="documenter" last-active="2.6">Julien Hardelin</contributor>
   <contributor role="artist" last-active="2.10">Aryeom Han</contributor>