[tx-robot] updated from transifex

apps/files/l10n/si_LK.php

apps/user_ldap/l10n/ru_RU.php

core/l10n/ca.php

core/l10n/cs_CZ.php

core/l10n/de.php

core/l10n/el.php

core/l10n/fr.php

core/l10n/it.php

core/l10n/ja_JP.php

core/l10n/pt_BR.php

core/l10n/si_LK.php

core/l10n/sv.php

l10n/af/core.po

l10n/ar/core.po

l10n/ar_SA/core.po

l10n/bg_BG/core.po

l10n/ca/core.po

l10n/cs_CZ/core.po

l10n/da/core.po

l10n/de/core.po