Use a different color scheme for graphs
Adjust size of hover information text
Merge pull request #59 from code-mancers/fix-color-on-classes-and-hover

Fixes #58 #57
Refactor graph init code to remove baseline series
Sort the series data and show only 10-11 items

* The sorting is done by the count of objects received during the
  initial runs, the count being sorted in descending order. If the item
  count crosses 10, then the rest of the objects are then aggregated
  into a 'Others' data point.