HAFAS XML: Fix for "Walk for %2 min" message

Due to `type` being `QString` and `druation` being `int`, the `duration`
parameter was treated as field length instead of value for substitution.

Closes #129 - Walk for %2 min (with rejseplanen.dk on Nokia N9)
HAFAS Binary: Fix gzipDecompress function

Worked only if data after decompression was less than 16384 bytes.
Everything past that point was lost.

Closes #130 - HAFAS Binary: Weird parsing issue on "Earlier" / "Later"
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