contrib-5325 grading - Fixed: Fatal error after manually updating a grader report.
Acceptance tests adjustments.
contrib-5345 dataformfield_select - Fixed: pattern fieldname:key does not display the selected key.
contrib-5346 dataformfield_textarea - Fixed: noedit pattern rule does not work.
Code cleanup and adjustments.
contrib-5357 Added: Instance store to manage stored instances of Dataform managers.
Acceptance tests adjustments.
Unit events test adjustement: Added call to advanced_testcase::resetAllData() in setup to work around an exception thrown while creating an event.
contrib-5358 observer - Fixed: Exception encountered in event observer during unit test.
contrib-5359 dataformfield - Fixed: field template displays only the standard pattern without any additional content.