Concept charts visualization
1. The box plot outliers functionality is added
2. Removing not used code
3. Adding the heat map concept code.
Adding charts functionality to the data-explorer: scatter plot and box
plot. Those new features are yet not fully working.
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Merge branch 'master' of github.com:molgenis/molgenis

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Undoing previously changes
Merge pull request #1028 from jjettenn/master

The basic visualization functionality (scatter plot, box plot) is added to the data explorer. Not fully functional.