Update nb/messages.php

[tmkarlsen]

The nb-file i missing strings and translations (89 nb vs 139 en)

e.g.

• [x] Type to search
• [x] Change profile name
• [x] Change password
• [x] Change email
• [ ] Content types
• [ ] Select a content type
• [ ] LTI params
• [ ] Messages
• [x] Enable single sign-on (SSO)
• [ ] The email address from the LTI launch shall be used to authenticate the user during the Edlib.com session. Only enable this for trusted platforms with email verification.

https://github.com/cerpus/Edlib3/blob/0bf5b31e959dfade5901061f4457fe4419002892/sourcecode/hub/lang/nb/messages.php vs. https://github.com/cerpus/Edlib3/blob/0bf5b31e959dfade5901061f4457fe4419002892/sourcecode/hub/lang/en/messages.php

Screenshot