Detect when SVG isn't supported in the user's browsers and create a
fallback. Display a text title rather than an SVG chart when SVG isn't
supported. Move the query construction and server calls to the
StatsModel. Fixed some misc. bugs so the app will work in IE8.
Merge branch 'master' of https://code.nceas.ucsb.edu/git/nceas-staff/datadepot.git