Bug on events width when changing the step or timeslots argument

[bgelineau]

Do you want to request a feature or report a bug?

bug

What's the current behavior?

The computation to see if events are on the same row is broken when someone changes the step or timeslots arguments. Linked to #886 but different, as the current problem arises from the hard coded minutes implemented in the computation.

Full sample implementation on https://codesandbox.io/s/j39nx6x793

What's the expected behavior?

The events should each take the whole width.

[arecvlohe]

Fixed in #910