OPAL-2393: Descriptive stats for categorical variable
OPAL-2393: Uniformized summary stats display
OPAL-2554 request for summary even if request for values is forbidden
OPAL-2393: Adding a row for "Other values" not mapped by categories or not part of the top 20 text values
OPAL-2393: Changing ellipsis to horizontal
Merge pull request #599 from emorency/OPAL-2393-Uniform-Summary

Opal-2393: Uniformized summary stats display