Merge pull request #131 from e-cuellar/master

Refactored label options into separate methods to allow for more
[ANALYZER-2370] -- Added text label visibility options to heat grid visualization
Merge pull request #132 from krivera-pentaho/dev

[ANALYZER-2370] -- Added text label visibility options to heat grid visu...
[ANALYZER-2364] - Added localizable options and updated options using last UX guidelines. Option added to line, area and scatter charts
Merge pull request #134 from webdetails/ANALYZER-2364

[ANALYZER-2364]
[ANALYZER-2364] - Fixing typo issue (while removing unmodified lines)
Merge pull request #135 from webdetails/ANALYZER-2364

[ANALYZER-2364] - Fixing typo issue (while removing unmodified lines)
Initial implementation of labels for BarLineCharts