Some page elements don't quite respond correctly if the element is not
in view, so should add the setEnsureElementIsInTheViewport() to click,
doubleclick, hover and change step locators.
Fixes#798
Also modifies the existing test for link selector validation to check 17
status code on exit when link selectors fail validation.
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Co-authored-by: Ilya Kreymer <ikreymer@users.noreply.github.com>
