docs.voltha.org::HOWTO edits and WARNING cleanups.

Makefile
--------
  o Added convenience target 'make warnings' to help search for problems.

config.py
---------
  o Add more exclusions for .venv/ so sphinx will stop checking sources.

howto/edit_voltha_docs.rts
howto/docs.voltha.org/index.rst
howto/docs.voltha.org/quickstart.rst
howto/docs.voltha.org/edit_voltha_docs.rst
------------------------------------------
  o Added a quickstart guide for editing repo:voltha-docs

Misc
----
  o Fixed several WARNINGS
  o Add missing documents in index.rst

Change-Id: I0b3d01cc4116d40bd84db49649669253d6135546
diff --git a/Makefile b/Makefile
index 7d76ccb..3de80c0 100644
--- a/Makefile
+++ b/Makefile
@@ -191,6 +191,22 @@
  && $(SPHINXBUILD) -M help "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
 
 ## -----------------------------------------------------------------------
+## Intent: Display WARNINGS buried in sphinx output
+## -----------------------------------------------------------------------
+warnings-log := warnings.log
+warnings:
+	$(MAKE) html 2>&1 \
+	    | sed -e 's@\([Ww][Aa][Rr][Nn][Ii][Nn][Gg]\)@\n\1@g' \
+	    > "$(warnings-log)"
+	less --ignore-case --hilite-search --pattern='/warning' $(warnings-log)
+
+clean::
+	$(RM) $(warnings-log)
+
+help ::
+	@echo "  warnings              Display WARNING strings buried in sphinx output"
+
+## -----------------------------------------------------------------------
 ## Intent: Display make hel footer
 ## -----------------------------------------------------------------------
 include $(MAKEDIR)/help/trailer.mk
diff --git a/VERSION b/VERSION
index 6e44ecb..56beced 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.12.4-dev
+2.12.4
diff --git a/conf.py b/conf.py
index cfd7dd4..9290b6f 100644
--- a/conf.py
+++ b/conf.py
@@ -88,7 +88,9 @@
 ]
 
 # don't include tags
-smv_tag_whitelist = None
+# smv_tag_whitelist = None
+# smv_tag_whitelist = disabled^ # Was = None
+smv_tag_whitelist = 'disabled_a^' # Was = None
 
 # inlcude only the branches matching master and voltha-*
 smv_branch_whitelist = r'^(master|voltha-.*)$'
@@ -138,9 +140,12 @@
         'CODE_OF_CONDUCT.md',
         '*/CODE_OF_CONDUCT.md',
 # Ignore all:
+        '__pycache__',
         '**/__pycache__', # generated - faster traversal
+        '.venv',
+        '**/.venv',       # external virtual env
 # Revisit: one directory pattern is sufficient.
-        '**/doc_venv',
+        '**/doc_venv', 
         '**/venv_docs',
         '**/virtualenv',
         '**/vst_venv',
diff --git a/howto/edit_voltha_docs.rst b/howto/docs.voltha.org/edit_voltha_docs.rst
similarity index 96%
rename from howto/edit_voltha_docs.rst
rename to howto/docs.voltha.org/edit_voltha_docs.rst
index 32bcf9d..a5d8009 100644
--- a/howto/edit_voltha_docs.rst
+++ b/howto/docs.voltha.org/edit_voltha_docs.rst
@@ -20,7 +20,7 @@
 Building the Docs
 """""""""""""""""
 
-Building requires python, creates a virtualenv (``doc_venv``) which has all the
+Building requires python, creates a virtualenv (``.venv``) which has all the
 necessary tools.
 
 Run ``make html`` to generate html documentation in ``_build/html``.
@@ -111,3 +111,4 @@
 - `RST Markup Documentation <https://rstdoc.readthedocs.io/en/latest>`
 - `Sphinx Documentation <https://www.sphinx-doc.org/en/master>`
 - `RST Markup Specification <https://docutils.sourceforge.io/docs/ref/rst/restructuredtext.html>`
+- howto/docs.voltha/org/quickstart
diff --git a/howto/docs.voltha.org/index.rst b/howto/docs.voltha.org/index.rst
new file mode 100644
index 0000000..fffaf7d
--- /dev/null
+++ b/howto/docs.voltha.org/index.rst
@@ -0,0 +1,8 @@
+HOWTO: docs.voltha.org
+======================
+
+.. toctree::
+   :maxdepth: 1
+
+   quickstart
+   edit_voltha_docs
diff --git a/howto/docs.voltha.org/quickstart.rst b/howto/docs.voltha.org/quickstart.rst
new file mode 100644
index 0000000..25743fe
--- /dev/null
+++ b/howto/docs.voltha.org/quickstart.rst
@@ -0,0 +1,116 @@
+Quickstart Guide: Editing
+=========================
+
+Intent
+------
+
+This quickstart guide decribes how to modify and commit changes that will
+be visible on http://docs.voltha.org.
+
+Clone repo:voltha-docs
+----------------------
+
+.. code:: bash
+
+   # Clone repo:voltha-docs
+   git clone ssh://gerrit.opencord.org:29418/voltha-docs.git
+
+   # Create a developer branch
+   git checkout -b dev-joey
+
+.. code-block: shell-session
+   :linenos: 2
+
+   # Clone repo:voltha-docs
+   git clone ssh://gerrit.opencord.org:29418/voltha-docs.git
+
+   # Create a developer branch
+   git checkout -b dev-joey
+
+Repositories:
+`gerrit <https://gerrit.opencord.org/plugins/gitiles/voltha-docs>`_
+`github <https://github.com/opencord/voltha-docs>`_
+
+.. code-block: shell-session
+   :linenos: 2,5
+
+   # Clone repo:voltha-docs
+   git clone ssh://gerrit.opencord.org:29418/voltha-docs.git
+
+   # Create a developer branch
+   git checkout -b dev-joey
+
+Interactive development
+-----------------------
+
+.. code-block: shell-session
+   :caption: Launch a browser for viewing local edits
+   :linenos: 4
+
+   cd voltha-docs
+   make reload
+
+- source edit: modify reStructuredText (RST) sources
+- Modify content to taste
+
+Invoke checkin tests locally
+----------------------------
+
+.. code-block: shell-session
+   :linenos: 3
+
+   cd voltha-docs
+   make sterile
+   make test
+
+.. list-table:: makefile targets for testing
+   :widths: 30,50
+   :header-rows: 2
+
+   * - make target
+     - Description
+   * -
+     -
+   * - make test
+     - Kitchen sink target: invokes all checkin tests (make lint linkcheck)
+   * - make lint
+     - Syntax check by source: rst, python
+   * - make linkcheck
+     - Verify URLs inlined within rst files are valid
+
+Document and commit changes for ``git log``
+-------------------------------------------
+
+.. code-block: shell-session
+   :linenos:
+
+   # Commit message: Line 1 symmarize changes with jira ticket linkage.
+   echo '[VOL-XXXX] update voltha.docs' > commit_message
+
+   # Commit message: Capture list of modified files
+   git status >> commit_message
+
+   # Commit message: Capture source diffs
+   git diff >> commit_message
+
+   # Summarize changes for git log
+   $EDIT commit_message
+
+   # git add <modified files>
+
+   # Commit changes to revision control
+   git commit -F commit_message
+
+   # Rebase your sandbox, merge branch=master into branch=dev-joey
+   ... git rebase documentation URL needed here ...
+
+   # Create a patch and request a code review
+   git review --reviewers email1 email2 email3
+
+Extra credit
+-------------------------------------------
+
+.. code-block: shell-session
+
+   make sterile
+   make html 2>&1 | sed -e 's/WARNING/\nWARNING/g' | less --ignore-case --hilite-search '/WARNING'
diff --git a/howto/index.rst b/howto/index.rst
index 2df281b..276a721 100644
--- a/howto/index.rst
+++ b/howto/index.rst
@@ -5,7 +5,11 @@
    :maxdepth: 2
 
    code/index
-   edit_voltha_docs
+   docs.voltha.org/index
    release/index
    ssh_access
    voltha_repositories
+
+   accounts
+   development
+   eof
diff --git a/howto/release/components/index.rst b/howto/release/components/index.rst
index 02bd2a9..77c45c5 100644
--- a/howto/release/components/index.rst
+++ b/howto/release/components/index.rst
@@ -8,7 +8,8 @@
    onos_dependencies
    voltha-protos
 
-   voltctl/index
-   voltctl/install
-   voltctl/release
-   voltctl/see_also
+   voltha-go.rst
+   voltha-lib-go
+   voltha-onos
+   voltha-openolt-adapter
+   voltha-openonu-adapter-go
diff --git a/howto/release/index.rst b/howto/release/index.rst
index 6dfa10f..ce276ee 100644
--- a/howto/release/index.rst
+++ b/howto/release/index.rst
@@ -14,6 +14,8 @@
    voltha-docs/index
    post-release/index
 
+   charts/index
+
    voltctl/index
    voltctl/install
    voltctl/release
diff --git a/howto/release/post-release/index.rst b/howto/release/post-release/index.rst
index 3aadb95..019babb 100644
--- a/howto/release/post-release/index.rst
+++ b/howto/release/post-release/index.rst
@@ -2,7 +2,7 @@
 =========================
 
 .. toctree::
-   :maxddepth 1
+   :maxdepth: 1
 
    gitreview
 
diff --git a/howto/release/voltha-docs/index.rst b/howto/release/voltha-docs/index.rst
index 0878da1..2d3441b 100644
--- a/howto/release/voltha-docs/index.rst
+++ b/howto/release/voltha-docs/index.rst
@@ -10,3 +10,4 @@
    :maxdepth: 1
 
    release_notes
+   create_lts_view
diff --git a/overview/release_process.rst b/overview/release_process.rst
index bee4a49..b76c6db 100644
--- a/overview/release_process.rst
+++ b/overview/release_process.rst
@@ -164,7 +164,7 @@
 Documentation and Release Notes
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 Release notes for the voltha-X.Y release are created and added to the voltha-docs repo. Please follow the template of
-past releases, an :doc:`example </voltha_releases/voltha_2.9>`
+past releases, an :doc:`example <voltha_releases/voltha_2.9>`
 
 Also, if needed a voltha-X.Y branch is created on docs repo.  These release notes also contain all the
 versions of components that will be released, and may be updated during the final QA process.
diff --git a/release_notes/index.rst b/release_notes/index.rst
index 498fdee..829012b 100644
--- a/release_notes/index.rst
+++ b/release_notes/index.rst
@@ -15,3 +15,5 @@
    voltha_2.4.rst
    voltha_2.3.rst
    voltha_2.2.rst
+
+   template