Add source / issues items to header

_data/header.json

@@ -9,8 +9,12 @@
             "url": "https://reverseeagle.org"
         },
         {
-            "name": "Feed",
-            "url": "/feed.xml"
+            "name": "Source",
+            "url": "https://framagit.org/reverseeagle/developers/"
+        },
+        {
+            "name": "Issues",
+            "url": "https://framagit.org/reverseeagle/developers/issues"
         }
     ]
 }