Dropbox changes
Merge branch 'staging' of github.com:code-dot-org/code-dot-org into staging
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commit ed258739f797f3220349ded9aa5f981827014bef
Merge: 9633e2b 7d14d19
Author: Brian Jordan <bcjordan@gmail.com>
Date:   Wed Dec 3 14:06:55 2014 -0800

    Merge pull request #648 from code-dot-org/shapeways_urls

    Allow level builders to specify a Shapeways item URL

commit 7d14d19aa5f3fb47316ccc17acdc819a70c8532b
Author: Brian Jordan <bcjordan@gmail.com>
Date:   Wed Dec 3 14:05:29 2014 -0800

    Fix parameters on shared level page (versus the post-level share popup)

commit da39846f0c285a881860bfb2cd4f6cf0b2b07d7f
Author: Brian Jordan <bcjordan@gmail.com>
Date:   Wed Dec 3 13:48:05 2014 -0800

    Allow level builders to specify a Shapeways URL to show in the sharing dialog with a shapeways icon

commit 9633e2b822630da11abce7b1ebc29fe84da72180
Merge: e6a8ead d348279
Author: Bjvanminnen <Bjvanminnen@gmail.com>
Date:   Wed Dec 3 13:47:37 2014 -0800

    Merge pull request #646 from code-dot-org/hideToolbox

    specify no toolbox with <xml></xml>

commit e6a8ead73498a0ee7891b40fecc1e3ffb892cf7b
Author: Josh Lory <josh.lory@code.org>
Date:   Wed Dec 3 13:45:25 2014 -0800

    Update ignorableAttributes when testing required blocks