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Merge commit 'cce82648671eac91f265449ea124349464608e1b'

Conflicts:
	MSRA_MonitorTestApp/app/src/main/java/kr/ac/yonsei/winet/msra_monitortestapp/MainActivity.java
	MSRA_MonitorTestApp/app/src/main/java/kr/ac/yonsei/winet/msra_monitortestapp/TrafficMonitor/ConnectivityHelper.java