[tx-robot] updated from transifex

apps/files/l10n/ca.php

apps/files/l10n/cs_CZ.php

apps/files_encryption/l10n/ar.php

apps/files_encryption/l10n/ca.php

apps/files_external/l10n/ca.php

apps/files_external/l10n/cs_CZ.php

apps/files_sharing/l10n/ca.php

apps/files_sharing/l10n/cs_CZ.php

apps/user_ldap/l10n/ca.php

core/l10n/cs_CZ.php

l10n/ar/core.po

l10n/ar/files.po

l10n/ar/files_encryption.po

l10n/ar/lib.po

l10n/ar/settings.po

l10n/ar/user_ldap.po

l10n/ca/files.po

l10n/ca/files_encryption.po

l10n/ca/files_external.po

l10n/ca/files_sharing.po