Content Language With Whitespace

Test for bug 76701: map HTTP-EQUIV content-language to -webkit-locale. This particular test tests that the the pragma-set default language is set to the first sequence of non-whitespace characters of the content-language content. This expectation may change, see bug. This expectation is as per the HTML 5 spec. It appears that Firefox does not exactly do this, but trims the leading and trailing whitespace. It's unclear what IE does.