bda15f updated the stlying for the contributions graph

3 files Authored by Ryan Lerch 8 years ago , Committed by Pierre-Yves Chibon 8 years ago ,
    updated the stlying for the contributions graph
    
    added teh graph to a card to match the other items on the page
    Also moved the code that renders this card into a macro, as it
    is displayed on a user's dashboard, as well as the profile page
    for a user.