more onwiki tests
couple of bug fixes for inter-wiki search & updates based on new requirements
fix nagging test errors in backlinks
completed writing tests for onwiki
added tests for video search
completed writing tests for interwiki query service
update resultset api to consistently use toarray, nesting as necessary
current progress with unit tests -- now onto result sets
updated resultset api to be more testable and separated
write tests for Wikia\Search\ResultSet\Factory
wrote tests for empty result set
Merge branch 'refactor-search-resultsets' into crossWikiSearchRedesign