* Use a single capability 'mod/workshop:exportsubmissions' to control
who is able to export a submission and all associated visible
peer-assessments.
* The export capability is by default granted to teachers and managers
as well.
* Simplify the integration of the export button into the submission
page. There is now a single place where the export button appears - at
the buttom of the submission page.
* Clean up the new strings introduced for this feature.
* Rewrite the portfolio caller class so that it better mimics the
behaviour of the submission.php page. It must not be possible to get
access to contents otherwise not available via the UI.
* Fix phpunit tests.
* Improve behat tests so that they can run in headless browser
(performance).
During the development, some problems were detected in the underlying
portfolio API, especially with LEAP2A format and files collisions
handling. These may be eventually fixed in the future, should there be a
demand for it.
This is just a refactored code block present at two different places. We
will need the same logic in the portfolio caller class soit made sense
to implement it as a new method, rather than make another copy&paste.
As a side effect, the logic is now properly unit tested.
* Disable tool "Select content" button if selected preconfigured tool
does not support Content-Item, and if the selected option is set to
"Automatic, based on launch URL".
* Disable tool configuration form fields if selected preconfigured tool
does not support Content-Item, but enable these fields if the selected
option is set to "Automatic, based on launch URL".
* Behat tests also updated to check disabling/enabling of launch url field.
When editing a quiz that is using the require passing grade completion method,
the grade to pass cannot be zero. Since the completion method is locked we
cannot recommend that the completion method is changed (as we do when the quiz
is being created). Instead we have to inform the user that the grade to pass
must not be zero.
When using a passing grade of zero, with the required passing grade
option, an error was displayed on the "grade to pass" element.
This was confusing as the error message is referring to the
"Require passing grade" element. This patch moves the message to
the "Require passing grade" element.
Additionaly this patch fixes a small typo in a comment.
