Newsletter improvement with date range

With the role "Newsletter" a user can send an email with all pins with a specific label that are less than a month old.

The goal here is to let the user decide from when to when should the pins be included.

https://github.com/voyages-sncf-technologies/vboard/blob/master/vboard-front/src/main/common/vboardProfilRole/templates/vboardProfilNewsletter.html