Do not split questions over more pages

[Witiko]

This PR fixes point 9 from ticket #10:

• do not split questions over more pages

Here is how the Sample Exam Questions document looks after this PR:

See also istqborg/istqb_product_template#9.

[danopolan]

@Witiko I was commenting on this one right after creation, but not sure where my comment went :)
Anyway, I am just afraid what if a question will not fit on one page? Will it be split somehow gracefully over more pages or not?

[Witiko]

Anyway, I am just afraid what if a question will not fit on one page? Will it be split somehow gracefully over more pages or not?

That's an excellent point. In such a case, the question would not break and would instead extend below the page foot.

Perhaps we can prevent splitting but only for questions that are no taller than 50% of page height? This way, we ensure that unsplittable questions will always fit a page and we can guarantee that no more than ~50% of page height will be empty when an unsplittable question has been moved to the next page. Of course, any percentage between 0% and 100% works.

[danopolan]

AFAIK currently, there is no such question, but new modules tend to have longer questions due to tables and figures. I would keep the implementation as it is (extend long questions below the page foot) and proceed with updates once needed in specific cases.

[Witiko]

OK, I will merge this PR then.