Rescheduling a LPQ experiment fills in wrong duration

[relet]

e.g.
https://scheduler.monroe-system.eu/NewExperiment.html#/?retrieveID=28862

sets a duration of 86399 seconds (=start until end of scheduling window)

[relet]

Seems like the solution is a bit convoluted, since we decided to have the experiment window displayed in the dashboard:

• what it should do is to retrieve the first task of the experiment, then
• if start = -1 (the task has not been assigned), set the duration to the value of stop (=duration of the task)
• if start > -1 (the task has been assigned), set the duration to (stop-start) (=duration of the task)