The web cron script at /admin/cron.php pretends to be a CLI script which
means that it is not possible to rely upon the CLI_SCRIPT constant.

With this change the modal can be configured to be scrollable or not.
If enabled to be 'scrollable', the modal's body will become scrollable
when the modal's height exceeds the browser's height. This is useful
in cases where the content in the modal is quite large and extends the
modal beyond the browser's height, which usually results in a bad UI.
If 'scrollable' is not explicitely configured, it will be set as 'true'
by default as in most cases it would be the expected behaviour.

Without this index every webservice call will do a full table scan
when it tries to validate a token. On a busy site with many tokens
this adds unnecessary load to the database.

This is no longer required as the Mink session is restarted after every
test regardless.

This allows debugging generated by the request to be shown on the
page.

This is now done for all scenarios. It is no longer necessary to do so
specifically for mod_scorm.

* the br tag does not work well in a flexbox context, a 100% with div
works in both classic and boost.

Helen Foster authored Jun 25, 2020 and David Mudrák committed Jun 25, 2020

Significant string change:

- presentationoraltrequired,atto_image - wording changed to mention
  'decorative only' checkbox

- a misplaced clearfix caused part of the recontrols to be
inaccessible