GUI "Display Statistics" works on single variable

Previous Display Statistics required that two variables be selected. Now if only one is selected, the same data as "glance inspectStats" will be shown.

Take a look at the "inspectStats" command and let me know whether or not this does what you wanted.

I'm not clear what you're asking. If only a single variable is selected in the GUI, I expect "Display Statistics" to show the same output as inspectStats. This commit accomplishes that.

merged

mentioned in commit 2fb12677