Ellen: Quiz compatible w/ Achievement

add new achievement when quiz is taken or created.
Merge branch 'master' of https://github.com/EllenSebastian/cs108project

Conflicts:
	quizWebsite/src/quizWebsite/Achievement.java
	quizWebsite/src/quizWebsite/Activity.java
	quizWebsite/src/quizWebsite/Friends.java
	quizWebsite/src/quizWebsite/Message.java
	quizWebsite/src/quizWebsite/Messages.java
	quizWebsite/src/quizWebsite/User.java
	quizWebsite/src/quizWebsite/UserManager.java
	quizWebsite/src/quizWebsite/myDBinfo.java