It seems the strings in `qt/bitcoin.cpp` are not translated.

E.g. `qt/bitcoin-qt -lang=cz -datadir=/tmp/a2` gives me a warning in English that the datadir does not exist.

QT_TRANSLATE_NOOP("bitcoin-core", "Listen for connections on <port> (default: %u or testnet: %u)"),
QT_TRANSLATE_NOOP("bitcoin-core", "Loading addresses..."),
QT_TRANSLATE_NOOP("bitcoin-core", "Loading banlist..."),
QT_TRANSLATE_NOOP("bitcoin-core", "Loading block index..."),
QT_TRANSLATE_NOOP("bitcoin-core", "Loading wallet..."),
QT_TRANSLATE_NOOP("bitcoin-core", "Location of the auth cookie (default: data dir)"),
QT_TRANSLATE_NOOP("bitcoin-core", "Maintain at most <n> connections to peers (default: %u)"),
QT_TRANSLATE_NOOP("bitcoin-core", "Make the wallet broadcast transactions"),
QT_TRANSLATE_NOOP("bitcoin-core", "Maximum per-connection receive buffer, <n>*1000 bytes (default: %u)"),
QT_TRANSLATE_NOOP("bitcoin-core", "Maximum per-connection send buffer, <n>*1000 bytes (default: %u)"),
QT_TRANSLATE_NOOP("bitcoin-core", "Need to specify a port with -whitebind: '%s'"),
QT_TRANSLATE_NOOP("bitcoin-core", "Node relay options:"),
QT_TRANSLATE_NOOP("bitcoin-core", "Not enough file descriptors available."),
QT_TRANSLATE_NOOP("bitcoin-core", "Only connect to nodes in network <net> (ipv4, ipv6 or onion)"),
QT_TRANSLATE_NOOP("bitcoin-core", "Options:"),
QT_TRANSLATE_NOOP("bitcoin-core", "Password for JSON-RPC connections"),
QT_TRANSLATE_NOOP("bitcoin-core", "Prepend debug output with timestamp (default: %u)"),
QT_TRANSLATE_NOOP("bitcoin-core", "Print this help message and exit"),
QT_TRANSLATE_NOOP("bitcoin-core", "Print version and exit"),
QT_TRANSLATE_NOOP("bitcoin-core", "Prune cannot be configured with a negative value."),
QT_TRANSLATE_NOOP("bitcoin-core", "Prune mode is incompatible with -txindex."),
QT_TRANSLATE_NOOP("bitcoin-core", "Pruning blockstore..."),
QT_TRANSLATE_NOOP("bitcoin-core", "RPC server options:"),
QT_TRANSLATE_NOOP("bitcoin-core", "Rebuild chain state and block index from the blk*.dat files on disk"),
QT_TRANSLATE_NOOP("bitcoin-core", "Rebuild chain state from the currently indexed blocks"),
QT_TRANSLATE_NOOP("bitcoin-core", "Reducing -maxconnections from %d to %d, because of system limitations."),
QT_TRANSLATE_NOOP("bitcoin-core", "Relay and mine data carrier transactions (default: %u)"),
QT_TRANSLATE_NOOP("bitcoin-core", "Relay non-P2SH multisig (default: %u)"),
QT_TRANSLATE_NOOP("bitcoin-core", "Rescan the block chain for missing wallet transactions on startup"),
QT_TRANSLATE_NOOP("bitcoin-core", "Rescanning..."),