ECMS-4520: No "Add New Page" item at AdminToolBar

Problem analysis
	- In ECMS-4197, when user get PortalNavigation, the edit permission is always false due to hard-coded

Fix description
	- Set correct edit permission in PortalNavigation by checking if user can edit it
ECMS-4502: Lose acme navigation when open a content

Problem analysis
  - On rendering new page, navigation JSON data is marked as initiated although it isn't initiated

Fix description
   - On rendering new page, re-initiated navigation JSON data