[ANALYZER-2391] - Data format is only applied to outer ring values in Sunburst chart
* refactorings
* named anonymous functions
* renamed a few
* compacted some of the separate integer and fractional functions into one parametric part function
* added comments and reordered functions
* moved round10 to pvc.js, as pvc.round10 (still needs tests)
[ANALYZER-2391] - Data format is only applied to outer ring values in Sunburst chart
* Changed indentation to 4 spaces to conform to CCC's norm.
* Replaced some comments by JSDocs.
Merge pull request #74 from dcleao/ANALYZER-2391

[ANALYZER-2391] - Refactorings