revised multiple choice questions
fixed conflict in multiple choice questions
New audio tour on activecode and changes to multple choice.

new audio tour on activecode.  new multiple choice quetion in chapter 3
(turtles) showing using pictures in quetion and answers.  Rewording of
some mutliple choice questions.  Added local storage for multiple
choice quesitons with multiple feedback.
Merge branch 'master' of https://github.com/ericsonga/runestone
Merge branch 'master' of github.com:ericsonga/runestone into ericsonga-master

Conflicts:
	modules/luther/sphinx/activecode/activecode.py
	source/GeneralIntro/introduction.rst
	source/MoreAboutIteration/moreiteration.rst
	source/PythonTurtle/helloturtle.rst
	source/Selection/selection.rst
	source/SimplePythonData/simpledata.rst
Remove  and ignore .DS_Store files from OS X.
including jquery and jquery-ui in the directive was redundant and caused jquery errors.
fix typos in directives.
incorrect case, temporarily delete
rename test1correct to have lower case c
Add simple cookie to log handling.  Better user identification than the anon@ipaddr
fix indentation on turtle example
Write a simple test program that runs all activecodes and checks for errors.
start of home page redesign
Add Options for :autorun:, :above:, and :hidecode:

The autorun option will arrange for the activecode block to run after the page has been fully loaded.   the above option locates the canvas before the code in the page layout, and the hidecode option allows for the code itself to be hidden along with a toggle button.
A few more ideas to redo the new landing page.
More minor changes to index page
Fix the test for allVisualizers undefined
more work on index page aesthetics
Bug Fix:  An extra quote slipped into some feedback and caused feedback to fail on question 3.1.1