Phone: ES translations

- Merge CAF

Change-Id: I146337770662db2fe513d3862d16fe370164b473
Phone: Incoming Call in Background

Allows user to set that Incoming Call UI will remain in background
if screen is on. Instead, a notification is added to StatusBar, which
can be used to bring up the Incoming Call UI. Ringtone and vibration
still occur as per system settings.

This has the same effect as apps marked as "immersive". It prevents
the incoming call from backgrounding the current activity.

PS 2: minor fix

Change-Id: Ib98dd74268826d511ce43ac75dd9dd66f774c9e7
Merge https://github.com/CarbonDev/android_packages_apps_Phone into jb3
Phone: Update zh_CN translation