Camera: Update exposure drawables to fix various problems

Updates exposure drawables to new ones more similar to the
original AOSP drawables. Also makes them visible on light
backgrounds.

They were previously changed in change 28836.

Change-Id: I1c628980e809e48646c7a6a68a546255e2a09b80
Camera: DA translation

From staging branch

Change-Id: I8828957baa9ce33fe4f672624b614bf18240494e
Camera: ES translation

PS2: Triggering Cid

Change-Id: I814fafdd05bbf37785fe556f342276001092b853
Merge "Camera: Update exposure drawables to fix various problems" into cm-10.1
Merge "Camera: DA translation" into cm-10.1
Merge "Camera: ES translation" into cm-10.1
Merge branch 'cm-10.1' of https://github.com/CyanogenMod/android_packages_apps_Camera into cm-10.1