Changed node filtering
Consolidated all tests to use same abstract test class
Added Portal.createSite
removed comments from PortalImpl.createPage
Improved TODO in SiteImpl.getDisplayName
Removed localized support for displayName and description from Site and Page as it is not supported internally
Handle authorization based on current managed user and role since extensions are now responsible for handling it on their own.
Support non-authenticated access and authorization to resources for public rest api.