Switch some repos to AOSP based versions

Change-Id: I2be8e822332dba17fb3d62c097392e48488e735f
README.md: add more info
track my own frameworks/webview
track my own packages/providers/ContactsProvider
track my own Launcher3
android-4.4.2_r2
Remove all custom device tree's and move some to dependencies
add OmniSwitch
track my own DeckClock
switch frameworks/base to kk-4.4-aosp branch

also lets use kk-4.4 branch for Camera2
use aosp branch for Camera2
track my own DownloadProvider
SoundRecorder: use kk-4.4-aosp branch
add frameworks/opt/cards and KernelTweaker app
track my own Email and UnifiedEmail
Camera2: switch back to kk-4.4 branch
Gallery2: switch back to kk-4.4 branch
add Setup Wizard
add external/google
track my own external/openssl and chromium_org/third_party/openssl