add component description file
add chapters to index
set pdf toc depth to 2 levels
add Readme file
add TODO file
add automatically generated component bitmaps
add Python script to generate the component doc

* generates 'component_reference.rst'
* generates 'quick_reference.rst'
add autogenerated component data

* to be used by the 'build_component_doc.py' script
try a different html template