Merge pull request #140 from e-cuellar/master

Implementation of Bret's mock ups for Stacked Column Charts
[ANALYZER-2369] -- Removed options other than 'none' and 'center' from heatgrid labels dropdown. defaulted 'outside' for pie chart labels dropdown
Merge pull request #141 from krivera-pentaho/dev

[ANALYZER-2369] -- Removed options other than 'none' and 'center' from h...
Implementation for 100% stacked column and small refactoring....