Users can now view their existing quizzes and choose to start, edit, or view results for any quiz.
Merge branch 'master' of https://github.com/shiplem3/clicker-web into shiplem3-master

Conflicts:
	application/controllers/quizzes.php
Merge branch 'shiplem3-master'
Basic functions to create / update quiz sessions
Fix small error in list quizz
Merge pull request #12 from gattazr/master

Basic functions to create / update quiz sessions
Implementing quiz sessions
Fixing linking issues
Fixe saving question bug
Merge pull request #13 from gattazr/master

Implementing quiz sessions
Added taking quizzes.
I added to functions to quizzes "question" and "answer". Question
displays the question. Answer creates a UserQuestion and UserAnswer
object based on the answer selected by the user. Currently there is
no checking if the session is active or if any of the ids are valid.
I roughly tested it tonight but it was difficult since the results
screen didn't appear to function properly so there may be bugs.
There is also an issue where you can get stuck if a question has
only " " or "" for answers. This shouldn't ever occur as the save
function should delete these questions but currently no deleting
works due to foreign key constraints.