Transform unicode domain names to punycode on filters compilation

@ameshkov commented on [Mon Apr 10 2017](https://github.com/AdguardTeam/AdguardFilters/issues/4778)

We currently do these transformations in the programs code. I guess it'd be easier for devs if these transformations were done on the server side.

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@Alex-302 commented on [Tue Apr 11 2017](https://github.com/AdguardTeam/AdguardFilters/issues/4778#issuecomment-293357369)

Can we add unicode domains to the filters?

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@ameshkov commented on [Fri Apr 14 2017](https://github.com/AdguardTeam/AdguardFilters/issues/4778#issuecomment-294158780)

> Can we add unicode domains to the filters?

Yep, what I want to be done is automatically transform them to punycode on the server side.

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@Alex-302 commented on [Fri Apr 14 2017](https://github.com/AdguardTeam/AdguardFilters/issues/4778#issuecomment-294163230)

ok, got it.