[FIX] odoo: compatibility sphinx2

Cherry-pick of odoo/odoo@2b28dd89b8

_extensions/odoo/__init__.py

@@ -21,6 +21,10 @@ def setup(app):
                      location="odoo extension")
         app.config.html_translator_class = 'odoo.translator.BootstrapTranslator'
 
+    add_js_file = getattr(app, 'add_js_file', None) or app.add_javascript
+    for f in ['jquery.min.js', 'bootstrap.js', 'doc.js', 'jquery.noconflict.js']:
+        add_js_file(f)
+
     switcher.setup(app)
     app.add_config_value('odoo_cover_default', None, 'env')
     app.add_config_value('odoo_cover_external', {}, 'env')
@@ -28,7 +32,9 @@ def setup(app):
     app.connect('html-page-context', update_meta)
 
 def update_meta(app, pagename, templatename, context, doctree):
-    meta = context.setdefault('meta', {})
+    meta = context.get('meta')
+    if meta is None:
+        meta = context['meta'] = {}
     meta.setdefault('banner', app.config.odoo_cover_default)
 
 def navbarify(node, navbar=None):

_extensions/odoo/layout.html

@@ -1,12 +1,5 @@
 {% extends "basic/layout.html" %}
 
-{% set script_files = script_files + [
-'_static/jquery.min.js',
-'_static/bootstrap.js',
-'_static/doc.js',
-'_static/jquery.noconflict.js',
-] %}
-
 {% set classes = [] %}
 {% if pagename == master_doc %}
   {% set classes = classes + ['index'] %}

_extensions/odoo/translator.py

@@ -5,7 +5,7 @@ import re
 import urllib
 
 from docutils import nodes
-from sphinx import addnodes, util
+from sphinx import addnodes, util, builders
 from sphinx.locale import admonitionlabels
 
 from . import pycompat
@@ -44,7 +44,12 @@ class BootstrapTranslator(nodes.NodeVisitor, object):
         '<meta name="viewport" content="width=device-width, initial-scale=1">'
     ]
 
-    def __init__(self, builder, document):
+    def __init__(self, document, builder):
+        # order of parameter swapped between Sphinx 1.x and 2.x, check if
+        # we're running 1.x and swap back
+        if not isinstance(builder, builders.Builder):
+            builder, document = document, builder
+
         super(BootstrapTranslator, self).__init__(document)
         self.builder = builder
         self.body = []