The "from …" fragments built by getFromStr() carried a leading space so
the sentence templates could concatenate them directly (%2%3). That blank
is invisible on Transifex and most translations dropped it, merging the
card name and the zone phrase in the log (#4943).
Drop the blank from the tr() strings and add the separator in code where
the fragment is built. The space is only prepended when the fragment is
non-empty, so messages that put the zone in the card name instead — "the
top card of their library." — keep their punctuation tight.
The templates stay at %2%3, since %3 is empty on those paths.
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