This allows for better caching capabilities on servers. If a
cache key is passed and the web service call does not require
the user to be logged in we will attempt to use GET for the
request. This allows for things like proxy caching on URLs.
The cache key must be changed if we do not want to retrieve
what has been cached and want to perform the request again.
When creating or editing the awarded badges criteria, the select element should be
required to prevent empty criteria from being created. In addition, if there are
already badges created with the empty criteria, there should be not be an exception
thrown when assessing whether the criteria has been completed.
* count() doesn't work quite as expected when the record being written
to the PDF is an object. So make sure to convert the record to an array.
* In addition, instead of comparing the total vs the current cell
counter, it would be more reliable to determine whether we're at the
last element of the array by getting the key for the last element and
comparing it with the key for the element that's currently being
processed.
This affects the case when a badge is setup with the criteria "manual issue by role".
The non-editing teacher can see all participants of the course, when awarding a badge, even with SEPARATE GROUPS mode enabled.
With this change, when the non-editing teacher chooses a group, and searches for a user, the results are filtered for that group.
The same happens for "Existing badge recipients by group" when revoking a badge.
* Use the 'starts with' selector when matching toggle groups by name in
non-exact mode to avoid potential conflicts with other toggle groups.
* Note down the required data attributes for JS in the template
documentations.
* Add a note of this output component in upgrade.txt.
* Add doc blocks for the core/checkbox-toggleall attributes and methods.
For cleaner templates, split checkbox toggle-all elements into three
templates:
* master checkbox (master control rendered as a checkbox)
* master button (master control rendered as a button)
* slave checkbox
