Settings: Set some more strings to translatable="false"

Change-Id: I7483044aa396b3c18b2cabf5715dea41ec44ca5b
Settings: Performance: Remove orphan dihering strings

Change-Id: I8975f029848f072e843b582d5852c11ddd1966b5
Merge branch 'cm-11.0' of https://github.com/CyanogenMod/android_packages_apps_Settings into temp