public/index.html - add IE compatibility attrs to html tag
public/js/tetrad-map.js - don't use the JS 'default' attr

It is a reserved word in IE JS.
public/index.html - reorder webshim, use jquery 1.x instead of 2.x

The webshim needs to be in the right place to apply correctly to d3,
and jquery 2.x does not support IE8, advice is to use 1.x instead.
public/js/tetrad-map.js - fix for IE11, getBBox() result is not modifiable

If you try, you get an exception.
public/index.html - workaround for IE11, makes taxa list correct height