gendummydata.py: Remove need for fortune subprocess

Fortune calls slows down the generation of dummy data dramatically
for large datasets. Read from a specified fortune file directly
to avoid the need for the subprocess.

Signed-off-by: canyonknight <canyonknight@gmail.com>
Signed-off-by: Lukas Fleischer <archlinux@cryptocrack.de>
gendummydata.py: Open all files with UTF-8 encoding

Users with certain locales are unable to generate dummy data.
Enforce UTF-8 encoding.

Fixes FS#32986

Signed-off-by: canyonknight <canyonknight@gmail.com>
Signed-off-by: Lukas Fleischer <archlinux@cryptocrack.de>
Changed 'Dutch' to 'Nederlands'

Supported languages are listed in their native language. Only Dutch is
in English. Translate reference into Dutch.

canyonknight: Commit message clarity

Signed-off-by: canyonknight <canyonknight@gmail.com>
Signed-off-by: Lukas Fleischer <archlinux@cryptocrack.de>
Merge branch 'maint'