Add conditional survey submit in-video button
	modified:   templates/exams/videotest.js
	modified:   templates/exams/view_exam.html
Merge branch 'master' of https://github.com/Stanford-Online/class2go into wescott-master-exercise-work
Enable in-video exams
Merge branch 'wescott-master-exercise-work' of https://github.com/Stanford-Online/class2go into wescott-master-exercise-work
Merge pull request #1602 from Stanford-Online/dca_new_working

New exam summary report (#1378)
#1576 in video surveys, basically working
a couple of edits to the video edit page
handle exam_types not set to the list of possible choices
Fix return_url for invideo quizzes and hide see_previous submissions
change survey return url to list view, not course homepage
Redirect page after video upload form => video list page

Instead of "Add Khan Exercises" page
Merge pull request #1606 from Stanford-Online/wescott-master-exercise-work

Wescott master exercise work
Fix for #1613

Wholesale import of any video nodes from the initial "problemset" node to
the exam_metadata. (i.e. any video tags--with question tag children--you
add as children to the problemset tag when you import will be copied to the
exam_metadata tag for your exam)

	modified:   templates/exams/renderPreview.js
Merge pull request #1614 from Stanford-Online/wescott-master-exercise-work

Fix for #1613
against #1545 redirects according to codebase.  Also see lots of tests

2 cases:

1. if we get no convenience domain name, i.e. class.stanford.edu/db/Winter2012
* checks if prefix--suffix is a valid class handle in the db
   * if not, do not redirect
   * if so, redirect if we have the wrong codebase (checking suffix=="fall2012"
     to determine whether it should be old or new codebase)

2. if we do get a convenience domain name,
* use CurTermMap to find suffix assoc. with convenience domain name
* redirect if we have wrong codebase (checking suffix=="fall2012"
     to determine whether it should be old or new codebase)
against #1545 redirects according to codebase.  Also see lots of tests

2 cases:

1. if we get no convenience domain name, i.e. class.stanford.edu/db/Winter2012
* checks if prefix--suffix is a valid class handle in the db
   * if not, do not redirect
   * if so, redirect if we have the wrong codebase (checking suffix=="fall2012"
     to determine whether it should be old or new codebase)

2. if we do get a convenience domain name,
* use CurTermMap to find suffix assoc. with convenience domain name
* redirect if we have wrong codebase (checking suffix=="fall2012"
     to determine whether it should be old or new codebase)
#1626 make email lists read-only in admin view
#1619 all email links class->class2go
Merge pull request #1627 from Stanford-Online/jbau-fix-email-list

#1626 make email lists read-only in admin view
Merge pull request #1621 from Stanford-Online/jbau-codebase-redirect

against #1545 redirects according to codebase.  Also see lots of tests