--Added twitter post status function in ShubUser class
--added twitterPostId to Post class
Merge branch 'master' of https://github.com/GoogleJump/JumpException

Conflicts:
	jumpException/war/WEB-INF/appengine-web.xml
	jumpException/war/WEB-INF/classes/guestbook/ShubUser.class
	jumpException/war/WEB-INF/classes/guestbook/TwitterPostStatusServlet.class