DaliPie.js:
  Description and tooltips are now generic (as opposed to CPI-specific).
  New options to replace description and tooltip generation functions via Y.customDescription and Y.customTooltip.
  sidebar.text renamed to sidebar.description.
  Y.format changed

cpi.html:
  New Y.customDescription and Y.customTooltip.
  Y.format changed.

Signed-off-by: Keith Ng <keith@point.org.nz>