DSPManager: DA translation

New strings and updated help text
Patch 2: Corrected error found by review.

Change-Id: Ia3a97f509889326db8d14a7e2c32582d5bc77946
Merge "DSPManager: DA translation" into cm-10.2
Merge branch 'cm-10.2' of git://github.com/CyanogenMod/android_packages_apps_DSPManager into cm-10.2