keyguard: fix-fix layout for sw320dp devices

Default values need to be defined in sw360dp or larger devices will
pick up sw320dp values automatically.

On the maguro device the keyguard isn't properly centered.

- Before http://review.cyanogenmod.org/54758:
    http://i.imgur.com/F6sokhA.jpg
- After http://review.cyanogenmod.org/54758:
    http://i.imgur.com/OdTkZLL.jpg
- With this commit:
    http://i.imgur.com/TThq9da.jpg

Change-Id: Idcc29ec79a12e61b26d2ad5070468e70a8ef39df
QuietHours: disable volume change tone during quiet hours

* Its quiet time, you're trying to be quiet, why would the volume
  change make noise when you're being quiet?
* Turn this off when system sounds are disabled during quiet hours

Change-Id: I6c7eb9d52f5dab9349bf2b8f72ddcb0ab45834fa
PT-BR: Update translations

Change-Id: I907d931b4f63a6cb72c344a6a8e99dbe924e8744