MDL-45338 editor_atto: Correct gesturemoveend listening

Delegate gesturemoveend rather than listen to ensure adequate event filters
and that we apply to only the correct editor.
MDL-45357 events: removed unnecessary verb from description
MDL-45357 events: Improve clarity of allow role change descriptions
MDL-45357 events: Normalise event description names
MDL-45357 events: Remove unnecessary the before 'id' in event descriptions
MDL-45357 events: unittest correction, event description change
on-demand release 2.7rc1+
MDL-45371 behat: Tests for block glossary_random