This adds a new question bank filter for filtering by question type. The
filter can be applied with one or multiple question types, and can
either include or exclude the selected types.
This corrects some definitions of the methods in the base condition
class to make things more obvious to developers implementing new
filters.
Previously if your filter wanted to use the default
`core/datafilter/filtertype` class, you still had to implement
`get_filter_class` to return `null`, since it was declared as abstract.
This change defines it as returning `null` by default, so this is no
longer necessary.
Also, this removes the default definitions for `get_condition_key` and
`build_query_from_functions`, and declares them abstract. Currently it
is necessary to override these to implement a functional filter so it
doesn't make sense to have a useless default definition.
This will not cause any breakages with existing filters. All filters
must already be defining the methods that are now abstract, otherwise
they will not function. Any filter that is now overriding
`get_filter_class` to return `null` will continue to work as before,
even though this is no longer necessary.
`behat/gherkin` 4.10.0 introduces a breaking change where backslashes
in feature files need to be escaped. We need to pin the Behat version
to 4.9.0 for now and raise a separate issue to update to the later
versions once we've fixed the affected feature files and communicated
this change to the community.
More details:
https://github.com/Behat/Gherkin/releases/tag/v4.10.0
Even though Oracle support is planned to be dropped for 5.0, the
actual issue that drops it (MDL-83172) has not yet landed. So, it's
better to keep this in environment.xml for now and defer its removal
from environment.xml in MDL-83172.
We currently use MMM and MMMM which mean 'month in year', however in
some locales this is context-specific and should only be used in
conjunction with a day, for example "10 October 2024".
LLL and LLLL are for "stand-alone on the in year" and should be used
when a month is used without a day.
