Added testing of an internal inter-page link with a fragment component.
Existing references to entries in issues.html served as such links
(which is how the bug was noticed), however it is better to have
a dedicated row in the test matrix for such a case.
Note that the test dynamic page uses assignment to innerHTML (the method
of DOM manipulation is important in the context of interaction with
wombat.js which may not fully and correctly handle all the possible ways
in which dynamic content may appear).
