Latency scan with calibration pulses in current mode

Description

In order to better investigate the VFAT timing, one should be able to take a latency scan with calibration pulses in current mode. All calibration pulse settings should be available in the graphical interface in order for the user to perform advanced studies.

Possible fixes

Add the current mode calibration pulses in the calibration suite web interface and hook up the values in the backend code. The scan routine as well as RPC methods should already be ready.