Index out of bound when empty list is passed to `allowAttributes(...).globally()`

[1003n40]

When using the HtmlPolicyBuilder and especially .allowAttributes(...).globally(), but I pass empty attributes it returns IndexOutOfBoundException. That is most probably caused by the globally() method which always tries to get the 0 element which may be passed or may not.

Looking at this I have spotted another bug, which is related to that where the style attribute could be located anywhere in the list, not as the first element, which currently is expected.