Merge pull request #21 from darktrojan-test/pt-BR

Update Portuguese (Brazilian) translation
Update newTab.dtd
Update version number and compatible versions
Use a boolean pref for recently closed tabs list
Use NewTabUtils.allPages to enumerate all tabs
Update version number
CSS for frame and spacing
Add code for setting frame size
Add code for setting grid spacing
Rename grid margin and spacing prefs, and add to options.xul
Push recent tabs list down to grid
Fix some numbers
Update version number
Merge branch 'unreleased'
Switch on donation reminder for version 17
Copy string changes
Update Portuguese (Brazilian) translation