While this bug was already present in the general admin search, the
combination of both search and filters was very uncommon. I've only
found this combinations in the users section, where you've got the
"erased" filter, but in this case searching for erased users doesn't
really make sense since their username and email have been deleted and
so there's nothing to find.
So the hidden content seemed to be the only affected section. However,
we're adding the field to every section so we don't have to make sure we
add it when we need it (like we did in the SDGManagement section).
Note we're using both the `hidden` and `disabled` properties to
guarantee compatibility with user agents which might still display the
option even when using the `hidden` attribute or hiding it with
`display: none`. We could also use `hide()` and `show()` instead of the
`hidden` property, but since we're using the `disabled` property, I
thought the code would be easier to read if we used properties in both
cases.
Also note users will no longer be able to get, let's say, debates which
are related to goal 1 and target 2.1. We think this use case is highly
unlikely and there's no need to take it into account.
We're going to add some JavaScript which affect this component, and IMHO
it will be easier to know the JavaScript affects this form if both have
their own separate file.
