[gnome-apps-nightly] Take Devhelp manifest from Devhelp git repository

[Sébastien Wilmet <swilmet src gnome org>]

commit 54022c982d757eb7f36b6056fc01bf73c3f9dcd4
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Sat Mar 4 11:57:17 2017 +0100

    Take Devhelp manifest from Devhelp git repository
    
    https://bugzilla.gnome.org/show_bug.cgi?id=779563

 org.gnome.Devhelp.app  |    3 ++-
 org.gnome.Devhelp.json |   43 -------------------------------------------
 2 files changed, 2 insertions(+), 44 deletions(-)
---
diff --git a/org.gnome.Devhelp.app b/org.gnome.Devhelp.app
index db5799b..89a6e17 100644
--- a/org.gnome.Devhelp.app
+++ b/org.gnome.Devhelp.app
@@ -1,2 +1,3 @@
 ID=org.gnome.Devhelp
-JSON=org.gnome.Devhelp.json
+JSON=data/org.gnome.Devhelp.json
+GITURL=git://git.gnome.org/devhelp