move doc to docs as it is more consistent, use new features of edgy.project to generate setup.py with data files

Projectfile

@@ -4,8 +4,8 @@ name = 'bonobo'
 description = 'Bonobo'
 license = 'Apache License, Version 2.0'
 
-url = 'https://github.com/hartym/bonobo'
-download_url = 'https://github.com/hartym/bonobo'
+url = 'https://github.com/python-bonobo/bonobo'
+download_url = 'https://github.com/python-bonobo/bonobo/tarball/{version}'
 
 author = 'Romain Dorgueil'
 author_email = 'romain@dorgueil.net'
@@ -49,3 +49,8 @@ data_files = [
         'bonobo/ext/jupyter/static/index.js.map',
     ]),
 ]
+
+
+@listen('edgy.project.feature.make.on_generate', priority=10)
+def on_make_generate_docker_targets(event):
+    event.makefile['SPHINX_SOURCEDIR'] = 'docs'