Update doc/about translation to pt.
Update index page translation to pt.
adding missing sentences
Initial translation
small improvement
 * no fixed height for contribute boxes as this does not work in german
  anymore.
 * align images of the boxes in the middle and add a max-width so if i
 * have a smaller window, the images will not overlay or disappear.
Add faq translation to pt.
Add cold boot attacks translation to pt.
Update doc/about
Update sidebar translation to pt.
Update various doc translation to pt.
Update support pages translation to pt.
Update sidebar and download page to pt.
Update contribute page translation to pt.
Fix small pt translation term in 0.23 security announcement.
Fix PO files
updated PO files
Merge remote-tracking branch 'sarava/doc/pt'
Fix inconsistent-trailing-newlines errors.
Cleanup PO file.