SSDM-5721: Person with role assignments implemented in Java and JS with system test.

...v3/translator/person/IPersonRoleAssignmentTranslator.java

...eneric/server/asapi/v3/translator/person/PersonQuery.java

.../v3/translator/person/PersonRoleAssignmentTranslator.java

...c/server/asapi/v3/translator/person/PersonTranslator.java

...d/openbis/public/resources/api/v3/as/dto/person/Person.js

...s/api/v3/as/dto/person/fetchoptions/PersonFetchOptions.js

...thz/sis/openbis/systemtest/asapi/v3/SearchPersonTest.java

.../ethz/sis/openbis/generic/asapi/v3/dto/person/Person.java

.../asapi/v3/dto/person/fetchoptions/PersonFetchOptions.java