Recycler for files
FAL should have a recycler like we had in the past for files.
The recycler should not be browsable by users (like the processing folder), likewise should files from the folder not be displayed to users. We might even think about completely disabling external access to these files (e.g. via
Recycled files should not be indexed in sys_file anymore, but the record should be serialized and stored somewhere else (like we do with sys_history for normal records). We cannot just simply drop the record as we might later need it again (and should then be able to restore the metadata).