KS-4740: Nothing happen when clicking on a submitted question on FAQ portlet

Fix description: Replace name by id in FAQAnswerIcon class of FAQViewerPortlet.gtmpl
KS-4747: [Wiki]Links in activities are saved with the full URL (including server and port)

Fix description:
Problem: When saving a new page, set URL for new page contains domain name.
How to fix?: Don't save domain name for URL.

Create a new KS (task) to correct the wrong URL in old pages
KS-4645: [Wiki] Content of wiki is cleared in Rich text mode in some case

Fix description: Set value for markup content in some special case.
KS-4620: Can not update page size of post when change value of "Posts Per Page" in user setting.
KS-4328: [KS][Answers]: unaligned Text with Label
KS-4328: The "+" icon of "Related to" is not aligned in Manage Question form.
Fix description: Add cs to set height & width for AddIcon in UIQuestionManageForm.
KS-4518: Error on FAQ portlet after editing preference (user ajax or not)

Fix description: In case save  FAQ portlet preference, check if the list of category exist, in both case useAjax or Not we will set the value: displayCategories.