diff -r a5e56749ca3d -r 3d259e1718ef src/pyams_content/shared/blog/interfaces/__init__.py
--- a/src/pyams_content/shared/blog/interfaces/__init__.py	Fri Oct 12 14:33:03 2018 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,80 +0,0 @@
-#
-# Copyright (c) 2008-2016 Thierry Florac <tflorac AT ulthar.net>
-# All Rights Reserved.
-#
-# This software is subject to the provisions of the Zope Public License,
-# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
-# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
-# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
-# FOR A PARTICULAR PURPOSE.
-#
-
-__docformat__ = 'restructuredtext'
-
-from zope.container.constraints import containers, contains
-from zope.container.interfaces import IContainer
-from zope.interface import Attribute, Interface
-from zope.schema import Text
-
-from pyams_content.shared.common.interfaces import ISharedSite, IBaseSharedTool, ISharedContent, \
-    IDeletableElement, IWfSharedContentPortalContext
-from pyams_i18n.schema import I18nTextField
-from pyams_sequence.interfaces import ISequentialIdTarget
-from pyams_workflow.interfaces import IWorkflowPublicationSupport
-
-from pyams_content import _
-
-
-BLOG_CONTENT_TYPE = 'blog'
-BLOG_CONTENT_NAME = _("Blog post")
-
-
-class IWfBlogPost(IWfSharedContentPortalContext):
-    """Blog topic interface"""
-
-
-class IWfBlogPostFactory(Interface):
-    """Blog post factory interface"""
-
-
-class IBlogPost(ISharedContent, IDeletableElement):
-    """Workflow managed blog post interface"""
-
-    containers('.IBlogFolder')
-
-
-class IBlogFolder(IContainer, IDeletableElement):
-    """Blog folder interface"""
-
-    containers('.IBlogManager', '.IBlogFolder')
-    contains('.IBlogFolder', '.IBlogPost')
-
-
-class IBlogFolderFactory(Interface):
-    """Blog folder factory interface"""
-
-
-class IBlogManager(ISharedSite, IBaseSharedTool, IWorkflowPublicationSupport, IDeletableElement, ISequentialIdTarget):
-    """Blog manager interface"""
-
-    contains(IBlogFolder)
-
-    folder_factory = Attribute("Blog folder factory")
-
-    topic_content_type = Attribute("Topic content type")
-    topic_content_factory = Attribute("Topic content factory")
-
-    description = I18nTextField(title=_("Meta-description"),
-                                description=_("The blog's description is 'hidden' into HTML's page headers; but it "
-                                              "can be seen, for example, in some search engines results as content's "
-                                              "description; if description is empty, content's header will be used."),
-                                required=False)
-
-    notepad = Text(title=_("Notepad"),
-                   description=_("Internal information to be known about this content"),
-                   required=False)
-
-
-class IBlogManagerFactory(Interface):
-    """Blog manager factory interface"""