Restructured the publications directories. Added subdirectories for each publication category. Also added index.html files in each of these directories. These are for the menu plugin.
Moved the menu template to a partial (from the default layout).
Moved the publications page to a partial (from the catalog.html).
Changed the menuHidden to true by default. This makes the menu opt-in.
Added the underscore module.
Updated docpad and plugins.
Added writeToFile, appendToFile helper functions.