SSDM-7399: Using Array.prototype.slice.call() instead of Array.from() which should also work on jenkins

SSDM-7651: Revert special handling for ELN master data (commit 6d3471d5)

SSDM-7430: fixing bug in UpdateAttachmentForEntityExecutor: Order of attachments are not controlled because of HashSet

SSDM-7648: using framework asserts instead of python asserts; added util.printWhoAmI() for each test

SSDM-7430: changing test data such that after dynamic property evaluation the test data are unchanged