* First version of nGraph Python API documentation pages.

* Remove use of (`) apostrophes since they generate Sphinx warnings.

* Fix submodule rendering in Sphinx PythonAPI docs

* Add updated index and conf py files

* Updated version of Python API doc.

* Better description for the autosummary

* FIX: Disable autogeneration of summary files in documentation.

* Remove redundant file containing duplicate information.

* Remove unused Sphinx extensions.

* (Partially) automatic generation of python API doc.

- Detailed documentation is generated automatically
- Summaries are generated automatically for all files except runtime.py
  which is parsed incorrectly.
- No additional steps required. Only run `make html`. Under the hood there
  is lunched script which generates all required files to some temporary
  directory under `/tmp/sphinx_auto_py_doc/` and copied to docs directory
  afterwards.
- Remove `autosummary_generate` from in configuration file since we use
  custom script which performs this step.

* Review update.

* Automatically generated stub files for doc.

- Added just few empty lines which has been removed during recent merge.