Fix i18n for Brazilian States

There is a small mistake in abbreviations of states.
We have now `BH` to Bahia, while `BA` would be correct.

Source:
http://en.wikipedia.org/wiki/States_of_Brazil#Proposed_division_of_Par.C3.A1

I had to make a small function to change the address when the WooCommerce is updated.
Hope everything is ok with him.