[IMP] web_timeline: Several improvements:

* Avoid to display all items of group_by model
* Remove unnecessary readgroup
* Remove dependency on project. Modify module structure. Imporve readme file.
* Add setup.py

web_timeline/models/__init__.py

@@ -0,0 +1,5 @@
+# -*- coding: utf-8 -*-
+# © 2016 ACSONE SA/NV (<http://acsone.eu>)
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+from . import ir_view