Enable setting "config.hidepassed" from URL params

Loading a QUnit test suite with `?hidepassed` appended to the URL is useful for CI services that take a screenshot of the completed test suite upon completion in various browsers, for example.

Fixes #457

/cc @jzaefferer
inline declared vars shouldn't receive a value, breaking to a new line for every declared var with assigned values.

Example:

```js
	var updatedUrl, value,
		field = this,
		params = {};
```