Update po files
Improve contributors guide
Better formatting
Translated using Weblate (Dutch)

Currently translated at 100.0% (863 of 863)
Indicate new suggestion only after string match
Include unit counts in import message
Translated using Weblate (Dutch)

Currently translated at 100.0% (863 of 863)
Merge remote-tracking branch 'origin/master'
Update po files
Translated using Weblate (Czech)

Currently translated at 100.0% (863 of 863)
Translated using Weblate (Dutch)

Currently translated at 100.0% (865 of 865)
Translated using Weblate (Swedish)

Currently translated at 88.4% (765 of 865)
Translated using Weblate (Turkish)

Currently translated at 99.5% (859 of 863)
Translated using Weblate (Turkish)

Currently translated at 100.0% (863 of 863)
Wrap long lines
Drop unused imports
Translated using Weblate (Catalan)

Currently translated at 26.5% (229 of 865)
Translated using Weblate (Danish)

Currently translated at 94.8% (820 of 865)
Translated using Weblate (English (United Kingdom))

Currently translated at 9.2% (80 of 865)
Translated using Weblate (French)

Currently translated at 99.1% (857 of 865)