EDIT

Rename classes according to convention

#5009 Add operations and corresponding tests for delete / update nodes actions

#5009 : missed in last commit

#5009 Correct test and test data

#5009 Add delete handler / operation for polytomous key view with corresponding test class

Move xml validation to base test class

Remove manual session creation and re-enable failing tests

Ignore failing tests to check if other tests fail

Add logs to debug test issue on integration jenkins

Fix test by making sure that all entities are loaded in sessions

Remove unnecessary call to session debugger