Refactoring of add questions page to use a backbone view.
Squashed commit of the following:

commit d1422f6cced42a66022c261872b7c96da4443373
Author: Steve Kashishian <steve@studiosanderson.com>
Date:   Tue May 7 11:31:27 2013 -0400

    Handle first load scenario, and handle null labels.

commit aaadc664cf30f6f45efedca0d8f997d0b606e068
Author: Steve Kashishian <steve@studiosanderson.com>
Date:   Mon May 6 18:43:08 2013 -0400

    Some more cleanup.

commit cf9552e895464c6439771114814fa4807ae45205
Author: Steve Kashishian <steve@studiosanderson.com>
Date:   Mon May 6 18:21:36 2013 -0400

    rearrange things a bit.

commit 76ba0dac82b7917166b1ef9da43f0d59f5be22cb
Author: Steve Kashishian <steve@studiosanderson.com>
Date:   Mon May 6 18:15:06 2013 -0400

    Some various cleanups for the accompanying segments.

commit a4d07cf7c9c91f74a373d3776611378cf929db6d
Author: Steve Kashishian <steve@studiosanderson.com>
Date:   Mon May 6 15:34:36 2013 -0400

    Move questions stage of wizard to a backbone view.