update pt-BR translation
update pt-BR translation

Change-Id: I3a05d0730fffeefd6082bb2fc3827a5eebd00b4f

djbender/canvas-lms,djbender/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,djbender/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,djbender/canvas-lms