bug #4481 mult_submits.inc.php Undefined variable Error

Signed-off-by: Marc Delisle <marc@infomarc.info>
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Merge remote-tracking branch 'origin/QA_4_2' into QA_4_2
Merge branch 'QA_4_2'
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Merge remote-tracking branch 'origin/master'
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Currently translated at 100.0% (2768 of 2768)
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Currently translated at 100.0% (2768 of 2768)
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Currently translated at 100.0% (2897 of 2897)
Fix typo

Signed-off-by: Marc Delisle <marc@infomarc.info>
Update po files
Merge commit 'fe3666a'
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Currently translated at 99.1% (2873 of 2897)
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Currently translated at 96.8% (2805 of 2897)
Merge remote-tracking branch 'origin/master'
Translated using Weblate (Danish)

Currently translated at 100.0% (2768 of 2768)