[VOL-2875] Documentation update

- Updated the main landing page and overview documentation
- Added the lab setup (copied from CORD docs)
- Use forked sphinx-multiversion to publish docs, which allows versions
  to be listed at bottom of sidebar
- Updated logo and favicon, fixed CSS to make logo legible
- Use VERSION file to set the version in the sidebar
- Add more words to dictionary
- removed reload functionality that is nonworking in Sphinx 2.x
- Fixed lint/linkcheck issues

Change-Id: I032e67d76393778fc697944a6d5df9c8cdacbbc4
diff --git a/testing/index.rst b/testing/index.rst
index 764a271..0d10dc9 100644
--- a/testing/index.rst
+++ b/testing/index.rst
@@ -1,9 +1,11 @@
-VOLTHA System Tests Documentation
-=================================
+VOLTHA Robot Test Libraries
+===========================
 
-Below are links to the documentation generated by robot.libdoc from the Robot resources
-in the `voltha-system-tests <https://github.com/opencord/voltha-system-tests>`_ repository.
-These files can also be generated locally by checking out the repo and running **make gendocs**.
+Below are links to the documentation generated by ``robot.libdoc`` from the
+Robot resources in the `voltha-system-tests
+<https://github.com/opencord/voltha-system-tests>`_ repository.  These files
+can also be generated locally by checking out the repo and running **make
+gendocs**.
 
 Libraries
 ---------
@@ -25,12 +27,13 @@
 
 
 Package "cord-robot" Documentation
-==================================
+----------------------------------
 
-Below are links to the documentation generated by robot.libdoc for the Robot resources
-in the `cord-robot <https://pypi.org/project/cord-robot/>`_ Python pacakge.
-These files can also be generated locally by checking out the `cord-tester <https://github.com/opencord/cord-tester>`_
-repo and running **make gendocs**.
+Below are links to the documentation generated by ``robot.libdoc`` for the
+Robot resources in the `cord-robot <https://pypi.org/project/cord-robot/>`_
+Python package These files can also be generated locally by checking out the
+`cord-tester <https://github.com/opencord/cord-tester>`_ repo and running
+**make gendocs**.
 
 Libraries
 ---------