Visual reports: Continuous variables should all show same plot types

[twey2]

[Noting the issue now, but visual reports issues to be addressed after summary reports.]
Currently, continuous variables in decimal format and integer format display different plot types.

With decimal format, density plots:

With integer format, histograms:

The same plot type should be used for all continuous variables.
First choice: histogram with density curve overlaid (if not too difficult/long to implement).
Second choice: all as density plots.

[GuiFabre]

I would go with the density curve overlaid solution.
To be discussed lated :)