Base: NFC toggle

Jira: http://jira.omnirom.org/browse/OMNI-553
Icons from Cyanogenmod.

Change-Id: I3230978211bdd25e84a919fe2ba3ceb8f8b79c83

Conflicts:
	packages/SystemUI/res/values-de/custom_strings.xml
	packages/SystemUI/res/values/custom_strings.xml
	packages/SystemUI/src/com/android/systemui/statusbar/phone/QuickSettings.java
	packages/SystemUI/src/com/android/systemui/statusbar/phone/QuickSettingsModel.java