[tx-robot] updated from transifex

apps/files/l10n/pt_PT.php

apps/files/l10n/ta_LK.php

core/l10n/pt_PT.php

l10n/pt_PT/core.po

l10n/pt_PT/files.po

l10n/ta_LK/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

l10n/templates/settings.pot

l10n/templates/user_ldap.pot

l10n/zu_ZA/core.po

l10n/zu_ZA/files.po

l10n/zu_ZA/files_encryption.po

l10n/zu_ZA/files_external.po

l10n/zu_ZA/files_sharing.po