added filter to access user from session
small changes to post controller
small changes to post controller
Merge origin/master

Conflicts:
	New Folder/WAMP_blog_engine/src/main/java/cs544/wamp_blog_engine/controller/BlogController.java
	New Folder/WAMP_blog_engine/src/main/webapp/WEB-INF/springconfig.xml
	New Folder/WAMP_blog_engine/src/main/webapp/WEB-INF/views/addBlog.jsp
	New Folder/WAMP_blog_engine/src/main/webapp/WEB-INF/views/blogList.jsp
	New Folder/WAMP_blog_engine/src/main/webapp/WEB-INF/web.xml
integration with tiles