LPS-45815 Move all methods using PortletPreferences from BookmarksUtil to BookmarksSettings
LPS-45815 Change all code using PortletPreferences in JSPs and make it use BookmarksSettings
LPS-45815 Change ConfigurationActionImpl to support multi value properties and validate email values
LPS-45815 Remove configuration variables which can be directly accessed from the Settings object from JSPs
LPS-45815 Create a Bookmarks Admin portlet to configure the service and remove the configuration sheet from the original Bookmarks portlet
LPS-45815 Format source
LPS-45815 Consistent property names and remove root.folder.id property
LPS-45508 Source formatting
LPS-45508 Use PortletKeys.BOOKMARKS_ADMIN where needed