implemented the user wrapper class

you can either give a User all of its information when you initialize
it, or you can initialize it to nothing and add /change information as
you go
LoginServlet implemented

Gawan—I assumed there was a message attribute in the context, even
though I can’t really find it in any of the branches. I think you
mentioned there was one?
Otherwise implemented!
Updated CreateAcctServlet

Should be operational (theoretically, not tested)
Created CreateQuiz new servlet
Just about finished with TakeQuiz Servlet

Also added a checkAnswer method in QuizFactory, and very slightly
changed the implementation of checkIfCorrect in
MultipleChoiceQuestion.java. Need help with the getOptions method in
Quiz!
Synced servlets with backend

Todo: remove conflicts in User.java