This MR aims at implementing a cyclic latency scan mode. It should allow better timing studies (e.g. during test beams); it should also give more flexibility for configuring the latency scans at p5.
Also includes a fix on the GEM supervisor scan point update timer. It is now stopped at Stop and cancel the scan. Previously, the scan was continuing in the background at Stop.
Closes #211 (closed)
All modes (particles vs calibration pulses and cyclic vs non-cyclic) work seamlessly on the GE1/1 integration setup in b904.