New translations and translation fixes

[ImFelixprogram]

This pull request contains:

• New translations in translations.txt
• Translating english parts in given german translations (translations.txt)
• Correcting spelling and grammar (translations.txt)
• Correcting form of address (translations.txt)
• Standardizing expressions (translations.txt)
• New translation in docker.txt
• New translations in main.txt
• New translations in settings.txt

[ich777]

@ImFelixprogram Danke für die Übersetzung und deine Zeit! :)

@spencerjunraid can be merged.

[ImFelixprogram]

@ich777 Immer wieder gerne :)

[bergware]

I have included your updates in my PRs to resolve the conflicts. This PR is now not needed anymore and I close it.