Add validations to Category model for presence and uniqueness
Move calendar js from html to asset file
Move calendar css from html to asset file
Tweak fieldset title clarify intentions of the points

They are points earned.

i.e. You don't get these points just by BEING healthy. You get points
by DOING SOMETHING healthy.
Embed category json data inside calendar container HTML
Write statistics to csv
Make textarea style appear like normal text on a web page
Precompile calendar.js assets in production
Render project icons from a partial and add Puppet project icon