Refactor documentation into sections

- Refactored documentation into sections for better viewing experience.

- Allows sub-project to include documentation in the master documentation by
  creating a doc/sphinx folder.

Tuleap: #769
Change-Id: I5c31dd0f2d949b9da602cd0d35751e18e51d6710

docs/source/compiling_and_installing/index.rst → docs/source/dev/compiling_and_installing/index.rst

+.. _building:
+
 Compiling and installing
 ========================
 

docs/source/contributing.rst → docs/source/dev/contributing.rst

+.. _contributing:
+
 Contributing
 ============
 

docs/source/dev/daemon

+../../../daemon/doc/sphinx
\ No newline at end of file

docs/source/dev/gnome-client

+../../../client-gnome/doc/sphinx
\ No newline at end of file

docs/source/dev/lrc

+../../../lrc/doc/sphinx
\ No newline at end of file

docs/source/getting_started.rst

-Getting Started
-===============
-
-For now, this manual only covers developers documentation. To get started with Ring, you should visit the `download page <https://ring.cx/en/download>`_ where there are instructions for installing Ring on your system.

docs/source/index.rst

 Welcome to Ring's documentation!
 ================================
 
-Contents:
+As a new user, :ref:`getting started <getting_started>` is a good place to
+start.
+
+As a developer looking to get started with a contribution, see
+:ref:`contributing <contributing>` and :ref:`how to build <building>`.
+
+.. toctree::
+   :caption: Introduction
+   :maxdepth: 1
+   :glob:
+
+   intro/getting_started
+
+.. toctree::
+   :caption: User Documentation
+   :maxdepth: 1
+   :glob:
+
+   users/connecting_to_ldap
+   users/setting_up_turn_stun
+
+.. toctree::
+   :caption: Developpers Documentation
+   :maxdepth: 1
+   :glob:
+
+   dev/contributing
+   dev/compiling_and_installing/index
+   dev/releasing
+
+.. toctree::
+   :caption: Ring Daemon
+   :maxdepth: 1
+   :glob:
+
+   dev/daemon/*
+
+.. toctree::
+   :caption: LibRingClient
+   :maxdepth: 1
+   :glob:
+
+   dev/lrc/*
 
 .. toctree::
-   :maxdepth: 2
+   :caption: Gnome Client
+   :maxdepth: 1
+   :glob:
 
-   getting_started
-   contributing
-   compiling_and_installing/index
-   releasing
-   setting_up_turn_stun
-   connecting_to_ldap
+   dev/gnome-client/*

docs/source/intro/getting_started.rst

+.. _getting_started:
+
+Getting Started
+===============
+
+To get started with Ring, you can install it from our repositories.
+Instructions on installing Ring can be found on the
+`download section <https://ring.cx/en/download>`_ of the Ring website.