Fix(l10n): Update translations from Transifex

apps/comments/l10n/it.js

apps/comments/l10n/it.json

apps/comments/l10n/pt_BR.js

apps/comments/l10n/pt_BR.json

apps/dav/l10n/pt_BR.js

apps/dav/l10n/pt_BR.json

apps/dav/l10n/zh_HK.js

apps/dav/l10n/zh_HK.json

apps/files/l10n/cs.js

apps/files/l10n/cs.json

apps/files/l10n/de_DE.js

apps/files/l10n/de_DE.json

apps/files/l10n/en_GB.js

apps/files/l10n/en_GB.json

apps/files/l10n/es.js

apps/files/l10n/es.json

apps/files/l10n/fi.js

apps/files/l10n/fi.json

apps/files/l10n/it.js

apps/files/l10n/it.json