Settings: fix NPE with null check on NFC adapter

Verifies the adapter is not null before dereferencing it and log and error if so

Change-Id: Id2a34c4698a97476bee9b78cb0ac7b980d1595cf
Settings: Enable AppOps

Enables back the AppOps activity and add a warning dialog on system
core app. Adds a "Apps permission" section under Personal.

Change-Id: I1d53d9430bd00003040b997e6ba939923847035f
Advanced low battery indicator options (2/2)

http://i.imgur.com/EUwRPh7.png

http://i.imgur.com/LX4SrC0.png

Change-Id: Ib3d4c8361f5563729965fe140f379bd7393b4a0a
Merge "[3/3] settings: battery light settings" into android-4.4
Merge "Advanced low battery indicator options (2/2)" into android-4.4
settings: fixed using wrong key to disable battery lights

Change-Id: Ic55ce4d70269877729a630f622934f1005a7e4e1
[2/2]Settings: Option to hide Adb notification icon

Base: https://gerrit.omnirom.org/#/c/2934/

Change-Id: I3ac5f08a077e04dade4bdeed58442043a8fb5d23
Settings: add development animation transition mode 0.75 and 0.25

Change-Id: Iaaeb3757ef9b3b97d66d929629e9035ab511f72a
[1/2] settings: Set AdvancedReboot to be enabled by default
RE: http://jira.omnirom.org/browse/OMNI-1

Fixing as I am a stupid head

Edit 9001: Setting this to be enabled by default for all users

Change-Id: I08a0e0cbe821e4d2dad6cf2a9ac20721cd19d69b
Settings: Remove System updates

Since this has no use, it's better to
remove it.

Change-Id: I52e8284d9c9f8ac2e76da7cbacb6a0d5dd00a4ff
Merge "Settings: add development animation transition mode 0.75 and 0.25" into android-4.4
Merge "Settings: Remove System updates" into android-4.4
Settings: Security: implement a pin keypad shuffler [2/2]

Change-Id: I225af5654c440aa16964df3257130febec6ef275
Merge "[1/2] settings: Set AdvancedReboot to be enabled by default RE: http://jira.omnirom.org/browse/OMNI-1" into android-4.4
Merge "Settings: fix NPE with null check on NFC adapter" into android-4.4
[2/2] Settings: enable advanced reboot by default only if developer options are enabled

Change-Id: I0b074cd3b6f2fd8515e917cf4a8a65639d6be2e4
Put fragment in specific activity's whitelist

Change-Id: I782dc8ec29e49a834832dc8357b3fdb12846e8a9
Revert "Settings: Remove System updates"

We're going to make use of this :)

This reverts commit 0cb067c101ba66fb0fc1408b906642f6ca4c96c9.

Change-Id: I29da9c36412c200383fb10bf2697042bffe5f5ee
Merge "Revert "Settings: Remove System updates"" into android-4.4
[1/2] Settings: interface settings restructering

Change-Id: I3de1cc9367deaa31baf6c2e86b8da7084ef788d1