More fine-tuned control on the generated HTML reports

[al2na]

Another planned revision on the package is to provide users with more fine-tuned control over the reports the runReport function generates. Currently, users can turn on/off certain analysis modules, but they do not have control over which plots/tables are generated in each module. We believe that providing such a flexibility would be a useful feature for non-programmer users, especially considering that the package will keep expanding with more variety of plots and tables in each module.