SSDM-55: fixed properties initialization, fixed js test

...-javascript/src/v3/as/dto/common/entity/AbstractEntity.js

...ipt/src/v3/as/dto/common/entity/AbstractEntityCreation.js

...c/v3/as/dto/common/entity/AbstractEntityPropertyHolder.js

...cript/src/v3/as/dto/common/entity/AbstractEntityUpdate.js

...gins/tests/1/as/webapps/openbis-test/html/openbis-test.js

.../tests/1/as/webapps/openbis-v3-api-test/html/test/dtos.js

...bapps/openbis-v3-api-test/html/test/test-dto-roundtrip.js