- Fix tab switching events for formspecs.
- Add padding to fix cutoff text rendering issue.
- Added more pt and pt_BR translations from Terifo.
Note that when you call translate() on a piece of
text, it merely adds translation tags around it to
request that it be translated client-side, but when
the client submits formspecs, the button values are
the actually translated text, which you can't
trivially access server-side. That means that we
need to use different button fields, not just count on
different button name/values, for events.
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