[tx-robot] updated from transifex

apps/files/l10n/ru.php

apps/files/l10n/sk_SK.php

apps/files/l10n/zh_HK.php

apps/files_external/l10n/ast.php

apps/files_external/l10n/zh_HK.php

apps/user_ldap/l10n/cs_CZ.php

apps/user_ldap/l10n/ru.php

l10n/ach/settings.po

l10n/ady/settings.po

l10n/af_ZA/settings.po

l10n/ak/settings.po

l10n/am_ET/settings.po

l10n/ar/settings.po

l10n/ast/files_external.po

l10n/ast/settings.po

l10n/az/settings.po

l10n/be/settings.po

l10n/bg_BG/settings.po

l10n/bn_BD/settings.po

l10n/bs/settings.po