changed the return units for power_sweep to be in dBm instead of Hz which was incorrect for that scan.
Merge branch 'fixing_units' of https://github.com/martinisgroup/servers into fixing_units
Merge branch 'fixing_units' of https://github.com/martinisgroup/servers into fixing_units
Fixed mag up issue where the server would continue magging even after reaching the voltage limits.  Also fixed an issue where the mag up time was not saved in minutes as it is supposed to be saved.