[gimp-web/testing] Bring back hoobly and artfiles deleted by an oversight, adjust URLs instead

[Alexandre Prokoudine <aprokoudine src gnome org>]

commit 7c68a49a57ab99a5cbcc083ad4f18a979efc846b
Author: Alexandre Prokoudine <alexandre prokoudine gmail com>
Date:   Tue Aug 30 01:54:26 2016 +0300

    Bring back hoobly and artfiles deleted by an oversight, adjust URLs instead

 content/downloads/mirrors2.json |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/content/downloads/mirrors2.json b/content/downloads/mirrors2.json
index c3832e3..04c4091 100644
--- a/content/downloads/mirrors2.json
+++ b/content/downloads/mirrors2.json
@@ -53,5 +53,11 @@
     ],
     "pirbot.com" : [
       "http://pirbot.com/mirrors/gimp/";
+    ],
+    "hoobly.com" : [
+      "http://pirbot.com/mirrors/gimp/";
+    ],
+    "artfiles.org" : [
+      "http://artfiles.org/gimp.org/pub/gimp/";
     ]
 }