update Brazilian Portuguese localization for 2.8

git-svn-id: svn://svn.transmissionbt.com/Transmission/trunk@14049 f4695dd4-2c0a-0410-b89c-da849a56a58e
the PiecesView will use target/action instead of notification center for mouse-down events

git-svn-id: svn://svn.transmissionbt.com/Transmission/trunk@14050 f4695dd4-2c0a-0410-b89c-da849a56a58e