merge translations

_nodeop/node-config.md

_nodeop/plugin-and-api-list.md

_nodeop/seed-node.md

_nodeop/setting-up-a-testnet.md

_nodeop/using-hivemind.md

_quickstart/accounts.md

_quickstart/authentication.md

_quickstart/choose_library.md

_quickstart/fetch_broadcast.md

_quickstart/hive_full_nodes.md

_quickstart/testnet.md

_resources/_piston.md

_resources/developeradvocate.md

_resources/hive_keychain.md

_resources/hivesigner_libs.md

_resources/overview.md

_resources/tools.md

_resources/whitepaper.md

_services/dhf.md

_services/ecency.com.md