i18n: Pull in the latest pt_BR translation

I don't think that "Quick" should be translated into Portuguese when it
is used as the name of the input method. It is a name, not an adjective.

We do translate it into Chinese, but that is because Chinese actually
has a real name for that input method.

The Portuguese language however doesn't know about Chinese input method,
and as such we shouldn't translate "Quick", just like we don't translate
"Cangjie".
Merge pull request #41 from Cangjians/pt_BR

i18n: Pull in the latest pt_BR translation