User: fix copy constructor to copy id
User: fix copy constructor to copy id

Fixes: 1efd107b7d55 ("model: introduce m_id member into model objects")
Signed-off-by: Jan Viktorin <3eab6ac54c005c4408f608556a6663b7f2abede7@fit.vutbr.cz>

BeeeOn/server,BeeeOn/server,BeeeOn/server,BeeeOn/server