Améliorer l'ergonomie de la sélection des apprenants

[dcadiou]

En l'état actuel (v1.10.0), la sélection des apprenants est peu ergonomique et surtout a un comportement difficile à appréhender.
Il faudrait, par exemple, s'inspirer de la sélection des membres des groupes de Moodle.

(in english : learners selection has a poor ergonomics and is quite difficult to understand. A redesign could be made based on what is done by Moodle for group member selection for instance)

[dcadiou]

For instance, it is impossible to add new learners without having to re-select again all previous members as if they were not presviously selected.