PLF-5111: Add mouseover and mouseout event for Navigation Content
PLF-5111: Sanitization nodetype and script name
PLF-5111 : Content Navigation menu doesn't work (product submenu is not displayed)
PLF-5111: Content Navigation menu doesn't work

Fix description:
	- Add MouseOver and MouseOut in Navigation Content to render dropdown menu
	- Correct acme:product namespace
	- Add the mixin type exo:navigable only to nodes under /sites/acme/categories