Visually denote hardcoded markup elements.

This adds a red border around HTML elements with the class "hardcoded" to let
users know which data is currently hardcoded in. While this solution is not
ideal for code being merged into master post-release, it works well for
pre-release development.
Merge pull request #264 from opscode/visually_denote_harcoded_elements

Visually denote hardcoded markup elements.