Revert "update mobile networks drawables"

This reverts commit 8091c5833bd80ba286a30958ccfd692b32294fc4.
Update MobileNetworks Icon

Match to QS tile icon

Change-Id: I416f0c9da40973532f79dc2ae7a46a274591a948
Fix the Mobile networks icon in Settings

-shrinked a little
-centered

See the screenshots:  https://drive.google.com/folderview?id=0BxY75MbFAKsXMzF3YXJZdUhVNm8&usp=sharing

Change-Id: Ia77dbf4417a3c4dd09adc11990406e97b482ae46
Settings: move keyguard wallpaper to system (2/2)

Change-Id: Id3bb66aa78c2e3dbd1170e74e33fcd160e5a70bb
Signed-off-by: Roman Birg <roman@cyngn.com>
Settings: check if NfcAdapter is null

according to the javadoc, getDefaultAdapter(Context) can return null, if
no NFC adapter exists.

check if adapter is null before trying to call isEnabled

Change-Id: I7ff5488cc3b53ce9785c3e46effcf29dc31fe0ef
PEEK: configurable pickup timeout (1/2)

- Allow the user to set different pickup timeout when a notification comes up through PEEK.
Options:
15 sec (default)
30 sec
45 sec
1 min
2 min

Change-Id: I82650f376b1dee81b5872317c70506d580361d49
Sound settings: display quiet hours active time as summary

Thanks to CM
Slim recents scale: update summary with chosen value