Update developer and s3p docs

Add in policy/gui and re-org the repo build order.

Add doc and links on how to setup mariadb and the
simulators.

Move s3p documentation into individual rst.

Issue-ID: POLICY-2500
Change-Id: I8c781817cbfb13b55e6225cf86143bb67fca5f70
Signed-off-by: Pamela Dragosh <pdragosh@research.att.com>
diff --git a/docs/development/devtools/drools-s3p.rst b/docs/development/devtools/drools-s3p.rst
new file mode 100644
index 0000000..3082732
--- /dev/null
+++ b/docs/development/devtools/drools-s3p.rst
@@ -0,0 +1,12 @@
+.. This work is licensed under a
+.. Creative Commons Attribution 4.0 International License.
+.. http://creativecommons.org/licenses/by/4.0
+
+.. _drools-s3p-label:
+
+.. toctree::
+   :maxdepth: 2
+
+Policy Drools PDP component
+~~~~~~~~~~~~~~~~~~~~~~~~~~~
+