GTNPORTAL-3508: Imported applications are public by default

Fix description:
* When adding an application into a category, the access permission to this application is restricted to administrators group.
* The same default permission is applied to categories and applications imported in batch by clicking "Import Applications".
GTNPORTAL-3507: Update test case from PLIDM-46 to gatein-portal code base
Revert "GTNPORTAL-3507: Update test case from PLIDM-46 to gatein-portal code base"

This reverts commit 078b74b838bfa837056fa58d702019fb598625fa.
Picketlink IDM upgrade to 1.4.5.Final . Minor changes in some comments