Update German translations (#3466)
* Change occurrences of "likt" to "liked"
* Improve existing German translations
* Translate new strings for German translation
* Apply suggestions from code review
Co-authored-by: Felix Siebeneicker <felix.siebeneicker@outlook.de>
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Co-authored-by: Felix Siebeneicker <felix.siebeneicker@outlook.de>
authored by