Created interface to display erasmus students that aren't enrolled in all shifts
Implemented automatic e-mails to erasmus students that aren't enrolled in all shifts
Fixed bug that showed master thesis as courses without enrolled shifts
Added message when email is sent successfully
Merge branch 'ticket/419529' of https://github.com/AfonsoFGarcia/fenix into AfonsoFGarcia-ticket/419529
Display message when an e-mail template for a given mobility process does not exist
Merge branch 'ticket/419529' of https://github.com/AfonsoFGarcia/fenix into AfonsoFGarcia-ticket/419529
Avoid programming normal application flow via exception handleing whenever possible.
Merge branch 'AfonsoFGarcia-ticket/419529' into develop