Removed console printlns.

To avoid IE 8 problems.
Shims, shams and shivs for IE8.

All the extra things you need so things don't blow up in broken old
browsers.
Don't execute dimple.js code in IE8 or earlier.

IE8 and dimple.js don't get on at all. There *may* be some alternatives
for d3.

This means that older browsers currently don't have any charts.