hash navigation does not work well with IE9

[hoatle]

Run on both dev and prod mode.

• Access index page: ok
• Click on hello world link: not ok

[hoatle]

Note this:

Because hash-based history in Internet Explorer relies on an <iframe>, be sure to only call start() after the DOM is ready.

$(function(){
new WorkspaceRouter();
new HelpPaneRouter();
Backbone.history.start({pushState: true});
});

from http://backbonejs.org/#Router