* Create searchAt wrappers
* Add optional support for searching on the click event
* Update QueryParser to use TextScanner's searchOnClick functionality
* Move/rename searchAt
* Move pendingLookup checks
* Add 'searched' event to TextScanner
* Use common searched event for Frontend and QueryParser
* Move functions, make private
* Refactor document.js into a class
* Move public functions first
* Rename private functions
* Rename
* Rename argument
* Use instance of DocumentUtil
* Update tests
* Refactor
* Rename (test-)document.js to (test-)document-util.js