CSS: update link colors

Conflicts:
	_layouts/post.html
Post draft
Initial draft version
Layout change
SaltStack101 - Switch to back and white image
Progress on draft
TODOs drafts
incremental progress
Add redcarpet header hrefs support

```
redcarpet:
  extensions: [with_toc_data]
```
Remove jekyll force_poling (forced high CPU usage)
Incremental progress, 2 paragraphs
Incremental progress
Incremental progress
Incremental progress
Incremental progress
CSS: update link colors
Incremental progress
Revert back to use `force_polling`

W/o force_polling the `jekyll` does not reliably regenerate itself, even
with `--watch` on.
Incremental progress, skeleton done.
Cosmetics