Add Portuguese (Brazil) translation

That way Kimchi can show UI in Portuguese (Brazil).

Signed-off-by: Aline Manera <alinefm@br.ibm.com>
issue #82: convert from svg image to png image

SVG is Scalable Vector Graphics image, but it can not supported by
IE.

issue: https://github.com/kimchi-project/kimchi/issues/82

Signed-off-by: ShaoHe Feng <shaohef@linux.vnet.ibm.com>
Signed-off-by: zhoumeina <zhoumein@linux.vnet.ibm.com>