Added a new json response for attribute rankings

Added a new page to display scoring attributes in rank order. Added a
bar chart template for demo purposes. Need to add buttons to select the
desired attribute to display as well as figure out where to put it in
the menus
cleaned up some of the url string handling

eliminated the cases where two almost identical classes were used to
handle different numbers of parameters within the URL. parsed the
parameter string to extract the URL components.
Added new templates and tweaks others to include them

Added templates to display pie chart scoring breakdown and the attribute
summary bar chart. made minor changes to the layout and scoringData
templates to reference the other new templates.