Extend workspaces functional tests concerning move-placeholders
The "modify" functional tests are extended concerning move-placeholders:
- changeContentSortingAndDeleteMovedRecord * in a draft workspace * change sorting of element on the same page * delete the moved element
- changeContentSortingAndDeleteLiveRecord * in a draft workspace * change sorting of element on the same page * switch to live workspace * delete the moved element
The test results reveal problematic states in the database and are used to proof correct and complete changes of further DataHandler changes in that regard.