Restructure documentation

Signed-off-by: Roberto Rosario <roberto.rosario@mayan-edms.com>

docs/index.txt

@@ -0,0 +1,48 @@
+Welcome to Mayan EDMS!
+======================
+
+.. image:: /_static/mayan_logo.png
+  :alt: Logo is a trademark of Roberto Rosario
+  :align: center
+
+
+Mayan EDMS is a `Free Open Source`_ `Electronic Document Management System`_,
+coded in the Python language using the Django_ web application framework and
+released under the `Apache 2.0 License`_. It provides an electronic vault or
+repository for electronic documents.
+
+.. image:: /_static/overview.gif
+   :alt: Overview
+
+.. toctree::
+    :hidden:
+
+    parts/features
+    parts/installation
+    releases/index
+    parts/getting_started
+    parts/access_control
+    parts/categorization
+    parts/collaboration
+    parts/settings
+    parts/storage
+    chapters/rest_api
+    chapters/docker/index
+    parts/advanced
+    parts/administration
+    parts/troubleshooting
+    parts/development
+    parts/faq
+    parts/license
+    parts/contact
+
+
+.. _Docker: https://www.docker.com/
+.. _Django: http://www.djangoproject.com/
+.. _Free Open Source: http://en.wikipedia.org/wiki/Open_source
+.. _Electronic Document Management System: https://en.wikipedia.org/wiki/Document_management_system
+.. _Apache 2.0 License: https://www.apache.org/licenses/LICENSE-2.0.txt
+
+
+..
+    parts/adding_documents