server: DIR: webinterface: Display the UUID of an OSD instead of its name in...

server: DIR: webinterface: Display the UUID of an OSD instead of its name in the Replica Status Page. Currently, the "name" field always defaults to "OSD @ <UUID>". This is redundant and therefore only "<UUID>" shall be shown.

With this change the existing JavaScript client code could have been simplified and the "name" member omitted from the JSON status data. But I didn't find it necessary.