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 agree, I just couldn't find a good place to do it.
Since our entire data comes from json-read, we'l have to manually go through the list we get from it and convert each string which could have entities (so far, this seems to be titles, comments, and bodies).
I'll remove it from here for now.