Ensure maximum one entry is latest for any given uuid.
Update integration tests.

Status code 201 Created.

Rename package for beans.
Remove unused beans.

Change name element to refer to parentsystemstructure and parentdevicestructure (uuid)
instead of system group, system, subsystem, device type (uuid).
For system structure, change 3 fields to 1 field (system group, system, subsystem to parent system structure).
For device structure, change 1 field  to 1 field (device type to parent device structure).

To   package org.openepics.names.rest.beans.response
From package org.openepics.names.util.response

Purpose to improve clarity and prepare for easier testing of REST API.

Correct docker integration tests for structures for delete approve.
Refactor docker integration tests.