This implementation will introduce bulk actions qbank
plugins which can grab the selected question and perform
actions according to the selected option from dropdown
in the base view.
Co-Authored-By: Safat Shahin <safatshahin@catalyst-au.net>
Co-Authored-By: Matt Porritt <mattp@catalyst-au.net>

Notification message for students after questions have been manually graded.

Update the custom_completion classes to accept the new completion
criteria

AMOS BEGIN
 MOV [completionpass,mod_quiz],[completionpassgrade,core_completion]
 MOV [completionpassdesc,mod_quiz],[completionpassgrade_desc,core_completion]
 MOV [completionpass_help,mod_quiz],[completionpassgrade_help,core_completion]
AMOS END

This implementation will introduct changes to
the mod_quiz to implement the new qbank api
for view. Major changes are introduced in
the custom view and also all the legacy points
to the old qbank are changed to qbank plugins
where needed. It also deprecated and deletes
classes and scripts which were kept not to
break mod_quiz for the new api implementation.

This implementation will introduce a qbank plugin "managecategories"
which will add the question categories feature in the question bank view
by replacing the core classes. Having this plugin will give users
the flexibility of enabling or disabling the category tab.

Quiz submission notifications: separate out User versus System

This commit implements the qbank api so that any plugin
can implement its own question bank. This api currently
works parallely with the moodle core classes and the
added qbank in the core, means the moment a plugin
is installed, that object is replaced with the object
from the plugin instead of core, which means the api
has flexibility till the plugins are integrated and the
plugins can be integrated in any order.

All the old classes are still there and not deprecated
as there is a different tracker for the changes to the
quiz and another tracker for class deprecation and
class renaming. Core question units tests are pointing
to the new api structure but the classes are pointing
to the location related to the plugin availability.
Co-Authored-By: Luca Bösch <luca.boesch@bfh.ch>
Co-Authored-By: Guillermo Gomez Arias <guillermogomez@catalyst-au.net>

one more array fix

Add attempt_updated, attempt_autosaved and attempt_question_restarted
events.
Update attempt_viewed to add page number.

Allow for conditions that are not set, consistent with other modules.
They will usually always be set in practice, but best to handle it,
which also helps with unit testing.

This implements sort ordering for all completion conditions, in
activities which support custom completion conditions.

This commit also removes an unnecessary DB query.

The Web Service seems to be doing excessive text cleaning.

Plus:
* On the attempts report pages, the "Regrade selected attempts"
and "Delete selected attempts" buttons are now only enabled when
there's at least one item selected.
* Behat fixes for quiz edit feature after this patch

We should be returning proper error codes and the translated string can be part of the debug information.

The remove_slot method should update the remaining slot's slot
attribute. It also should update the remaining slot's question number
and section info.

It's enough to have $slotsinorder, and the $slots property
was redundant. There should only be a single source of truth.