[FIX] auth_oauth: quote redirect url in state

Otherwise, Firefox is splitting the state at the first &, which can potentially be located in the redict param of the state

addons/auth_oauth/controllers/main.py

@@ -70,7 +70,7 @@ class OAuthLogin(openerp.addons.web.controllers.main.Home):
         return dict(
             d=request.session.db,
             p=provider['id'],
-            r=request.httprequest.full_path
+            r=werkzeug.url_quote_plus(request.httprequest.full_path)
         )
 
     @http.route()