LPS-45983 Create "Documents and Media Admin" portlet and copy the configuration from "Documents and Media"
LPS-45983 Use new portlet key (DOCUMENT_LIBRARY_ADMIN) where necessary
LPS-45983 Remove email settings from Documents and Media because it should be in Documents and Media Admin
LPS-45983 Remove display settings from Documents and Media Admin because it should be only in Documents and Media
LPS-45983 Copy from DLSettings - no logic changes
LPS-45983 Move settings where they belong (if they are specific to a porltet will go in DLPortletInstanceSettings and if they apply to every portlet will go in DLSettings)
LPS-45983 Use dlPortletInstanceSettings in some places where we were still using portletPreferences
LPS-45983 We can safely remove this lines because they were added long time ago when we were sharing configuration.jsp for more than one portlet, but now every portlet (documents and media, documents and media admin, documents and media display and media gallery) have their own configuration and they don't need to share it anymore.
LPS-45983 Remove call to unused Javascript method
LPS-45983 Add DM Admin portlet to hidden category to avoid it showing in the portal pages when "Add application" is clicked
LPS-45983 Documents and Media, Media Gallery and Documents and Media display will only have configuration at a portlet instance level
LPS-45983 Add missing imports to make JSPs compile
LPS-45983 SF
LPS-45983 Lang keys
LPS-45983 SF