[FIX] web: date[time] custom filter format

In a list view, create a custom filter involving a date or datetime field

Before this commit, the domain that was sent to the server
contained the date or datetime as the pure string
representation that Moment.js constructs
that is a ISO compliant one, containing info on timezone

After this commit, the format is the one of the server, in UTC
and NOT ISO compliant. Also, the format for date is dealt with

OPW 2085936