Get a vector of users_id named by logins and lastnames from a selected course and with enrolled only or everyone
get_users(selected_course, only_enrolled, users2_init, acad_year)
Selected course, can be "All" or specific.
Only the enrolled users or everyone.
The table from which it gets the users.
The academic year of the users.
A vector of users_id name by logins and lastnames
# Need a reactive context and a MongoDB database