Better display user names and group names

Anytime a username is displayed (permissions, task assignee, last modification, author, ...) we display First Name + Last Name then on tooltip we display username, email. The First Name + Last Name text is clickable so as to browse the user view on Users & Groups Directories section. fallback on email if first name + last name is null.

Anytime a groupname is displayed (permissions, task assignee, last modification, author, ...) we display group label, and group name in title. Group label is clickable and browses the group view in Users & Groups Directories section.