Fix changelog typos

Change-Id: If217913697ccde09e3eeb8ae32b5bb429c925b1c
Revert "cm: Add some app-specific performance settings"

This reverts commit 34d5e908433ce79e1c7fbcb88cf1661a4adb1743.
Persist DPI & Xposed across flash
Add OmniSwitch

- Remove CM Updater
- Remove CM Wallpaper
- Remove LockClock