New stats function for DBHelper (.getScatterChartStats)
returns a map of ranking:display_count data
renamed .getStats to .getPieChartStats until I can think of a better
naming scheme
Added initial scatter chart (Dots of Rot)
Plots display_count relative per ranking (which indicates how much the
app has actually taught vs what you already knew)
Still needs work: dots must be dynamically sized based on frequency of
value pairs and ux is horrible.
Also moved a commented section of code (example on using achartengine)
to a different function
Slightly improved look of "Rotten Pie" Chart (also needs work)
Added pagination in card history
Will break with too few in history at this point...