[tx-robot] updated from transifex

l10n/ar/core.po

l10n/ast/core.po

l10n/ca/core.po

l10n/cs_CZ/core.po

l10n/da/core.po

l10n/de/core.po

l10n/de/files_sharing.po

l10n/de_AT/core.po

l10n/de_DE/core.po

l10n/de_DE/files_sharing.po

l10n/el/core.po

l10n/en_GB/core.po

l10n/en_GB/files_sharing.po

l10n/eo/core.po

l10n/es/core.po

l10n/es_AR/core.po

l10n/es_MX/core.po

l10n/et_EE/core.po

l10n/et_EE/files_sharing.po

l10n/eu/core.po