Remove legacy files from SchoolApps merge

aleksis/core/dashboard/README.md

aleksis/core/dashboard/settings.py

aleksis/core/dashboard/templates/dashboard/index.html

aleksis/core/dashboard/urls.py

aleksis/core/dashboard/views/dashboard.py

aleksis/core/dashboard/views/tools.py

aleksis/core/mailer.py

aleksis/core/templates/components/react.html

aleksis/core/templates/mail/email.html

aleksis/core/templates/mail/email.txt

aleksis/core/templates/mail/header.html

aleksis/core/templates/mail/notification.html

aleksis/core/templates/mail/notification.txt

aleksis/core/templates/partials/footer.html

aleksis/core/templates/partials/header.html

aleksis/core/templates/partials/paper/footer.html

aleksis/core/templates/partials/paper/header.html

aleksis/core/userinformation.py

aleksis/core/util/network.py