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.

"Invalid amount for -maxtxfee=<amount>: '%s' (must be at least the minrelay "
"fee of %s to prevent stuck transactions)"),
QT_TRANSLATE_NOOP("bitcoin-core", ""
"Maintain a full transaction index, used by the getrawtransaction rpc call "
"(default: %u)"),
QT_TRANSLATE_NOOP("bitcoin-core", ""
"Maximum allowed median peer time offset adjustment. Local perspective of "
"time may be influenced by peers forward or backward by this amount. "
"(default: %u seconds)"),
QT_TRANSLATE_NOOP("bitcoin-core", ""
"Maximum size of data in data carrier transactions we relay and mine "
"(default: %u)"),
QT_TRANSLATE_NOOP("bitcoin-core", ""
"Maximum total fees (in %s) to use in a single wallet transaction or raw "
"transaction; setting this too low may abort large transactions (default: %s)"),
QT_TRANSLATE_NOOP("bitcoin-core", ""
"Number of seconds to keep misbehaving peers from reconnecting (default: %u)"),
QT_TRANSLATE_NOOP("bitcoin-core", ""
"Output debugging information (default: %u, supplying <category> is optional)"),
QT_TRANSLATE_NOOP("bitcoin-core", ""
"Please check that your computer's date and time are correct! If your clock "
"is wrong, %s will not work properly."),
QT_TRANSLATE_NOOP("bitcoin-core", ""
"Please contribute if you find %s useful. Visit %s for further information "
"about the software."),
QT_TRANSLATE_NOOP("bitcoin-core", ""
"Prune configured below the minimum of %d MiB.  Please use a higher number."),
QT_TRANSLATE_NOOP("bitcoin-core", ""
"Prune: last wallet synchronisation goes beyond pruned data. You need to -"
"reindex (download the whole blockchain again in case of pruned node)"),