ECMS-5509: Content of anonymous users are automatically visible

Fix description:
  - enroll node in publication lifecycle with user=IdentityConstants.ANONIM when user is null
ECMS-5509: Content of anonymous users are automatically visible

Fix description:

  - fix wrong comparison statement in PostCreateContentEventListener.java
Merge branch 'fix/4.0.x/ECMS-5509' into stable/4.0.x
ECMS-5496: CLONE - Resize side bar doesn't work on Site Explorer

Fix description:
  - fix js problem: item not found in ECMUtils.js
ECMS-5452: CLONE - FCK editor does not load after opening insert image ("image icon") with IE

Fix description:
  - Use flag to mark if the Content Selector opened. When this flag is on, do not update Ajax.
ECMS-5556: Broken comment of a document in some views (Admin, List)

Fix description:

  - Remove javascript call to loadEffectedWidthColumn() function in TreeList.gtmpl
  - In case the function getDisplayName() return null, we will use function getUsername() instead.
ECMS-5525: [REG] Can not search by comment of document

Fix description:
  -  Add a new condition to allow search on comment content
ECMS-5524:  [CKEditor] Problem to access a content with a "%" in the title, via the Image-FCKplugin

    Problem analysis:
       - In ContentSelector.js, the name and title is decoded by using decodeURIComponent. This function return error if % character is not escaped

    Fix description:
       - Escape % character to %25