Enable scrollbars on pop-up window. (Firefox default is no scrollbars.)
Merge pull request #12 from chip-rosenthal/2014-atx-gis-day

Enable scrollbars on pop-up window. (Firefox default is no scrollbars.)
Merge branch '2014-atx-gis-day' of github.com:open-austin/demo-website into 2014-atx-gis-day