camera: Support for Smart Scene

 * Add support for automatic scene detection as found on some cameras.
 * This will update the scene every 2 seconds and show an icon in the
   UI when it changes.

Change-Id: Id7360b016d0e59278325ab1a2603af1a86fb4423
Camera: NL translation

Change-Id: I6cb4b8e09b911fbb216a5e95068b4e18c0ceb38e
Merge branch 'cm-10.2' of https://github.com/CyanogenMod/android_packages_apps_Gallery2 into jb4.3