Update sv_SE app translation for 3.8.0

[hoffie]

Hi @genesisproject2020, We are getting ready for the 3.8.0 release. No further changes to translatable strings are currently planned for this release.

We would be happy if you updated the Jamulus software translations for sv_SE until 2021-05-15.

Please

• Update your fork to current master,
• Update translations using Qt Linguist in your fork,
• Commit and push your changes and reference this Issue,
• Open a Pull Request before 2021-05-15

Suggested commit and PR message:

Update sv_SE app translation for 3.8.0

Fixes #1616

Note: The term "Central server" has been replaced with "Directory server"

Further documentation can be found in TRANSLATING.md.

Thanks for contributing to Jamulus!

[genesisproject2020]

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