Settings : network traffic

This codes are not mine an here i'm giving the proper credits

Commits inside and they authors:
@htchoi1995: omnirom/android_frameworks_base@4268d2d
@Haus1: omnirom/android_frameworks_base@12daeeb
@Haus1: omnirom/android_frameworks_base@017c56c
@cristianomatos: https://github.com/crdroidandroid/android_frameworks_base/commit/6504ad84f7bb0db10543d938f24412e2d082e43e

@alviteri: Added SeekBar from KK for autohide

Conflicts:
	core/java/android/provider/Settings.java