i18n-pt_BR: synchronized with
c6b1be675d3c
i18n-it: remove bogus fuzzy translations for revset
The translations were all random fuzzy strings, which can only do harm, so
remove them.
Moreover, given the status of revset (it seems mostly an internal undocumented module, and
to understand it you need the source anyway), I prefer not to translate it for
now.
i18n-it: update mq translation
Significant updates were performed - when translating something, I tried to
choose a term and use it consistently everywhere possible, so here I translated
a lot of messages. Additionally, I use the mq extension a lot, and now I am
using the translation, so I will be able to translate it better.