added sculling event listener
Revert "added sculling event listener"

This reverts commit e19a9764889039bf41ddbc51643c189fe9b05404.
added scrolling event listener, set navi to active on scroll
fixed namespace class name
added css class even/odd, minor changes
minor changes
removed the external css
fixed css class construction
handle more than one opw navi in scroll listener
fix: fetching layout from parent pages
fix: set navi to active when a hash anchor is set on load