add bootstrap landing page
Merge branch 'master' of https://github.com/chynchwen/pet

Conflicts:
	WebContent/WEB-INF/mvc-dispatcher-servlet.xml
	WebContent/WEB-INF/pages/login.jsp
	WebContent/WEB-INF/pages/member/landing.jsp
	src/main/java/cc/pet/commons/web/MainController.java
	src/main/java/cc/pet/user/model/User.java
	src/main/java/cc/pet/user/service/impl/SecureUserService.java