add selected class to selection list items and refactor striSelected on
selection container to striHasSelection to avoid confusion
fix unexpected behavior of Element.getParents, see
https://github.com/mootools/mootools-core/issues/2478
pass back ajax parameters in response
refactor ajax parameter striStart to striKey
add highlight method and use it when opening path to tree node
fix openPath for already loaded nodes
add handles to icon and label for newly selected nodes
optimize translation
fix search, if no matching results found and display messages
optimize highlight function for easier styling