[tx-robot] updated from transifex

apps/files/l10n/ca.php

apps/files/l10n/eu.php

apps/files/l10n/it.php

apps/files/l10n/pt_PT.php

apps/files_encryption/l10n/it.php

core/l10n/lv.php

l10n/ca/files.po

l10n/eu/files.po

l10n/it/files.po

l10n/it/files_encryption.po

l10n/lv/core.po

l10n/lv/settings.po

l10n/pt_PT/files.po

l10n/templates/core.pot

l10n/templates/files.pot

l10n/templates/files_encryption.pot

l10n/templates/files_external.pot

l10n/templates/files_sharing.pot

l10n/templates/files_versions.pot

l10n/templates/lib.pot