Added tooltips to pie charts. Calculated percentage based on filtered data. Also styled tooltips in <style> section of index.html.
Commented up to line 106 including the entire drawmap function.
changed width and height variables to better variable names. agewidth and ageheight to heightPie and widthPie.
added comments to drawAges() and moved common variables to top.
commented and renamed drawNativity().
removed gender barchart from file.  The page is too cramped with this chart on there.  Will possibly move to another page or just remove all together.  Code has been moved to GenderChart_removed.js for now.
converted gyms data into long format and created room for new pie chart that breaks down the type of attendence in each type of class.  Currently only draws for 1914 and Cabot Street.
changed h4 for classes chart