로그아웃/탈퇴 기능 추가
Merge branch 'master' of https://github.com/tom5park/counam.git

Conflicts:
	CouNamServer/src/main/java/com/k2h2/counam/constant/UserStatus.java
	CouNamServer/src/main/java/com/k2h2/counam/mapper/UserMapper.java
	CouNamServer/src/main/java/com/k2h2/counam/service/AuthService.java
	CouNamServer/src/main/webapp/html/m/login.html