Prevent default browser behavior for failure/pass links

[jschilli]

Changed href in HTML reporter to prevent default behavior.

This can be an issue when using mocha in integration testing with a booted application (ember in my case)

[jbnicolai]

@jbryson3 I suppose the reason is that the css styling is different when you leave the href (no cursor change on hover, for instance).

@jschilli merged, but changed the noop to javascript:void(0);

[jschilli]

@jbnicolai - thanks - much appreciated