Merge pull request #36 from dcleao/master

[ANALYZER-2257] Basic null support (for well behaved hirarchies).
Merge pull request #37 from dcleao/master

[ANALYZER-2257] Basic null support - changed were plot options are read ...
[ANALYZER-2275] -- Constrained text height and width for trimming and showing text in Sunburst
[ANALYZER-2257] -- Reverted division
Merge pull request #38 from krivera-pentaho/dev

Constrained height and width of text visibility and trimming