test cross-browser compatibility of flexbox

[caseyg]

we should try to make sure it degrades gracefully or enhances progressively in unsupported browsers

Graceful degradation
Providing an alternative version of your functionality or making the user aware of shortcomings of a product as a safety measure to ensure that the product is usable.

Progressive enhancement
Starting with a baseline of usable functionality, then increasing the richness of the user experience step by step by testing for support for enhancements before applying them.

(from: http://dev.opera.com/articles/view/graceful-degradation-progressive-enhance/)

[caseyg]

just torched a lot of the old frontend so this is irrelevant now