KDE Dolphin: add German translation

Credits to @RandomGuy234
Closes #154
10 jobs for master in 8 minutes and 40 seconds (queued for 5 seconds)
Status Job ID Name Coverage
  Linting
passed #205022
linting:bandit

00:00:12

passed #205024
linting:codespell

00:00:11

passed #205034
linting:mypy

00:00:13

passed #205032
linting:pyflakes

00:00:12

passed #205027
linting:pylint

00:00:24

 
  Test
failed #205039
tests:archlinux

00:01:06

passed #205043
tests:debian

00:01:05

failed #205047
allowed to fail
tests:debian_with_bubblewrap

00:00:33

passed #205050
tests:fedora

00:02:50

failed #205053
tests:gentoo

00:07:39

 
Name Stage Failure
failed
tests:gentoo Test
[+] Testing txt
[+] Testing gif
[+] Testing css
[+] Testing svg
[+] Testing ppm
[+] Testing avi
[+] Testing mp4
Cleaning up file based variables
ERROR: Job failed: exit code 1
failed
tests:archlinux Test
[+] Testing txt
[+] Testing gif
[+] Testing css
[+] Testing svg
[+] Testing ppm
[+] Testing avi
[+] Testing mp4
Cleaning up file based variables
ERROR: Job failed: exit code 1
failed
tests:debian_with_bubblewrap Test

----------------------------------------------------------------------
Ran 120 tests in 21.989s

FAILED (failures=6, errors=37)
[+] Testing pdf
[+] Testing png
Cleaning up file based variables
ERROR: Job failed: exit code 1