This is to be consistent with places like forum and book, where if we
have a next link, we also have a previous link.
At the same time I have amended the links/buttons from 'Previous'/'Next'
to 'Previous page'/'Next page' because I think that is clearer.
Also, on the last page of the quiz, I have changed 'Next' to 'Finish
attempt ...' for consistency with the link in the navigation block.
AMOS BEGIN
CPY [navigatenext,mod_assignment],[navigatenext,mod_quiz]
CPY [navigateprevious,mod_assignment],[navigateprevious,mod_quiz]
AMOS END
The sections are created on the edit quiz page, and then appear in the
navigation panel when the quiz is being attempted to help students find
their way around.
The 'Shuffle questions' setting has been moved from being per-quiz
to being a per-section.
This commit is actually the joint work of Mahmoud Kassaei and Tim Hunt
from The Open University. We could only use one persons name for the
commit and this time Mahmoud gets the credit/blame.
Further improvements to this code, including resolving edge cases:
* The new feature can only be used when it is possible for the
previous question in the quiz to be complete.
* Also, this new feature cannot be used in combination with shuffle
questions, because that make no sense; nor in combination with
sequential navigation, because to make that work properly would be a lot
of effort. If someone needs that to work later, it should be possible
for them to implement it.
* There were changes in the edit renderer API, to try to make things
more consistent, and to make it less likely we will need to change
things again in the future. See mod/quiz/upgrade.txt.
* As part of this change, the styling of the Edit quiz page was tweaked
to make slighly more efficient use of the horizontal space, and to be
more symmetrical.
