Sidebar script and updated Markdown files

Hi Rich,

Here's Jesse's script and the Markdown files he updated with them. I tested all of the updated documents by importing them to a local server that has the latest KB portlet and osb-ldn-theme. All of the documents imported successfully and render the sidebars per the new style from the theme.

It's ready to merge. Thanks.

https://issues.liferay.com/browse/LRDOCS-1409

@jrao