Localization add tab text dutch

[erikjanwestendorp]

Translate "add tab" to dutch (tabblad toevoegen)

[umbrabot]

Hi there @erikjanwestendorp, thank you for this contribution! 👍

While we wait for one of the Core Collaborators team to have a look at your work, we wanted to let you know about that we have a checklist for some of the things we will consider during review:

• It's clear what problem this is solving, there's a connected issue or a description of what the changes do and how to test them
• The automated tests all pass (see "Checks" tab on this PR)
• The level of security for this contribution is the same or improved
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• Avoids creating breaking changes; note that behavioral changes might also be perceived as breaking
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Thanks, from your friendly Umbraco GitHub bot 🤖 🙂

[mikecp]

Hello @erikjanwestendorp ,
Thanks for this PR, it's always nice helping localize the back-office 👍

While checking the language files, I noticed that this same translation was used in the "shortcut" section (cf. en_us.xml file), so I was wondering if you would mind adding it in the "shortcut" section of the "nl.xml" file as well 😁

[erikjanwestendorp]

@mikecp Thanks for your review. Of course I want to, just updated the PR 😄

[mikecp]

Hihi thanks for the update @erikjanwestendorp 👍
Looking great in the backoffice, so let's merge this and get you qualified for some hacktoberfest swag😉

Bedankt en tot ziens!

[nul800sebastiaan]

Cherry picked for 8.18 as well 123bcee (hint: easier for us if changes that affect both v8 and v9 start being fixed in v8, since we merge that up regularly).