Update pt_BR wording

The current wording for the language has some little flaws. For instance, here in Brazil the majority of the population doesn't have a clue on what "mortgage" means simply because we don't have that kind of transaction here -- at least not as much as other countries do --, so I removed that word and kept "Rent" only. "Eating out" shouldn't be a verb because we don't describe things with verbs very often (I made it "Restaurants", which makes perfect sense). Also, we aren't so kind when we speak: "Please wait" should be just "Wait". The other entries I edited were just not properly translated.