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", ""
"Username and hashed password for JSON-RPC connections. The field <userpw> "
"comes in the format: <USERNAME>:<SALT>$<HASH>. A canonical python script is "
"included in share/rpcuser. This option can be specified multiple times"),
QT_TRANSLATE_NOOP("bitcoin-core", ""
"Wallet will not create transactions that violate mempool chain limits "
"(default: %u)"),
QT_TRANSLATE_NOOP("bitcoin-core", ""
"Warning: Unknown block versions being mined! It's possible unknown rules are "
"in effect"),
QT_TRANSLATE_NOOP("bitcoin-core", ""
"Warning: Wallet file corrupt, data salvaged! Original %s saved as %s in %s; "
"if your balance or transactions are incorrect you should restore from a "
"backup."),
QT_TRANSLATE_NOOP("bitcoin-core", ""
"Whitelist peers connecting from the given IP address (e.g. 1.2.3.4) or CIDR "
"notated network (e.g. 1.2.3.0/24). Can be specified multiple times."),
QT_TRANSLATE_NOOP("bitcoin-core", ""
"Whitelisted peers cannot be DoS banned and their transactions are always "
"relayed, even if they are already in the mempool, useful e.g. for a gateway"),
QT_TRANSLATE_NOOP("bitcoin-core", ""
"You need to rebuild the database using -reindex to go back to unpruned "
"mode.  This will redownload the entire blockchain"),
QT_TRANSLATE_NOOP("bitcoin-core", ""
"You need to rebuild the database using -reindex-chainstate to change -txindex"),
QT_TRANSLATE_NOOP("bitcoin-core", "%s corrupt, salvage failed"),
QT_TRANSLATE_NOOP("bitcoin-core", "%s is set very high!"),
QT_TRANSLATE_NOOP("bitcoin-core", "(default: %s)"),
QT_TRANSLATE_NOOP("bitcoin-core", "(default: %u)"),
QT_TRANSLATE_NOOP("bitcoin-core", "-maxmempool must be at least %d MB"),