Question List Mode implementation

This uses tabulated-list-mode to build the list of questions.
The actual content of questions is displayed on a separate buffer using org-mode (for now of course, this is not permanent).
I personally wouldn't include this tidbit as part of the function, unless this function is used in multiple locations, it would be better to `concat` it when it is used.

Note to make this string a variable value—some may wish to drop it entirely, in which case `(setq ?? "")`.