PLF-5480: Improve cleanupPublication option to publish a first version
PLF-5476 : CLONE - NPE error while getting dashboards information in DashboardInformationRESTService
PLF-5449 : CLONE - PathNotFoundException after installing acme
PLF-4888: Login and Register new account from acme

Fix description:
	- Correct image path
PLF-5401: Remove 10 Slowest Templates gadget from upgrade list and application registry list  because it had been removed.
PLF-5398: Don't show RSS when header don't input value

Fix description:
  - separate RSS Link from show header
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-5455 : CLONE - Content Navigation menu doesn't work
PLF-5457 : CLONE - Built-in sample contents are not publishable
PLF-5458 : CLONE - [Migration] gadget upgrade plugin does not work properly
PLF-4994 : site created from acme template is broken [Users template with dynamic content + update user Logo]
UI-3017 Cache level gadget is not rendered well in IE 8 in PLF 4.1
Merge master into feature/stabilization branch
Update the version for platform-ui after merge
Update the version after merging
Merge master into feature/pdf-js branch