Before this change, an SVGAElement with an xlink:href attribute and no href or name attribute which
was compiled by the angular HTML compiler would never be clickable, due to the htmlAnchorDirective
calling event.preventDefault() due to the missing href attribute.
This change corrects this behaviour by also testing the xlink:href attribute if the element in
question is determined to be an SVG anchor tag (with the href property having type SVGAnimatedString)
Closes#5896Closes#5897
Change the a directive to link and hookup a click event only when
there is no href or name in the template element.
In a large Google app, this results in about 800 fewer registrations,
saving a small but measurable amount of time and memory.
Closes#5362
Apparently there is a really weird bug in IE6-8 that causes anchor textContent
to be reset with href content when both contain @ symbol.
Inserting a bogus comment node into all anchor elements in IE works around this
browser bug.
I'm fixing the issue via directive because that way we'll fix it for jQuery as
well.
I fixed an e2e test too because it was incorrect.
Closes#1949
