[Summon 2] Cleanup, add support for individual pages
Detection on multiples should be broken now, because it requires monitorDOMChanges, which makes the page unusable right now.
Test doesn't actually work on the "book" item, for unknown reasons. Possibly because offsetHeight is not set in a hidden iframe? (making this up)
Fix XPath for Chrome (Chrome says it's invalid)
Merge pull request #1 from aurimasv/pr/804

[Summon 2] Cleanup, add support for individual pages