Added more Swedish validator translations
minor #10063 Added more Swedish validator translations (tobiassjosten)

This PR was submitted for the 2.3-dev branch but it was merged into the 2.3 branch instead (closes #10063).

Discussion
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Added more Swedish validator translations

As per @javiereguiluz's [distress call](http://symfony.com/blog/help-symfony-reach-3-billion-people). ;)

Commits
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6fea175 Added more Swedish validator translations