ActionBar icon : removed, Settings icon : changed, Header icons : All-New

Conflicts:
	res/drawable-hdpi/ic_settings_mobilenetworks.png
	res/drawable-hdpi/ic_settings_multiuser.png
	res/drawable-xhdpi/ic_settings_mobilenetworks.png
	res/drawable-xhdpi/ic_settings_multiuser.png
	res/mipmap-hdpi/ic_launcher_settings.png
	res/mipmap-mdpi/ic_launcher_settings.png
	res/mipmap-xhdpi/ic_launcher_settings.png
	res/mipmap-xxhdpi/ic_launcher_settings.png
	res/mipmap-xxxhdpi/ic_launcher_settings.png