Feature Request: Insert and Extract JSON directly to and from Questions

[mirgcire]

This feature addresses two problems:

1. Reusing questions in different quizzes
2. Allowing content experts to create/review quiz questions outside of the WP back-end.

After reviewing the existing code, this feature seems reasonably straightforward with some minor refactoring of admin.js.

Here is how it could work: In the top right hand corner of each question box add a "copy" icon. When the icon is clicked all the normal fields get hidden and, in their place, is just one text box containing the JSON representing the question. Above the text box are two new icons: [save] and [abandon]. The user can copy the JSON and place it in an external file or paste in revised JSON from another quiz.