Improve testserial lib
Add get_rest_url() in common/utils.py
Add get_rest_url() in common/utils.py
Admin : list of devices layout : improve for responsive
Admin : list of devices layout : improve for responsive (device detail finished)
Admin : continue improvments on clients layout. WIP, not finished!
testserial : fix missed part
Admin layout : clients list
Admin layout : responsive layout finished!