LPS-39588 Fixing isStagedPortlet method - this should be true when the portlet's data is staged or not, default true is wrong
LPS-39588 Removing check from LayoutExporter - if we are exporting a portlet, either staging or just export the portlet should be processed - configuration is always staged.
LPS-39588 Adding option to check if a portlet support data staging at all
LPS-39588 Adding thread local to be able to check if we are actually in a staging process
LPS-39588 Apply new thread local to staging processes - in case of remote both server should know if this is staging or not - subsequent remote calls would be different threads
LPS-39588 Refactoring portlet data exporting - this will work when a portlet is not staged but can be exported
LPS-39588 Change portlet_messages because the original code relied on having a wrongly returned true default value
LPS-39588 Apply new thread local and some source formattings to have the same patterns we have in other staging background task executors
LPS-39588 Autogenerated