I think that you should send them the originals of they asked to be original. The only exception is the IELTS results, which you can send a copy. I think It is a good idea to let them know that we were rejected on our work letter. That might make our case revision faster. The letter of reference should be Original, as they asked, so does the police certificate.
I am trying to gather all documents and re apply in coming weeks; However I would not get too optimistic this time, as they mentioned that new regulations will apply to cases.
Aidin:
I saw your message, but I could not reply! Sorry about that! The website did not allow me. Many of the documents are asked only for copies. The rest that they asked for originals are those that need to be renewed and we all better send new one, the original documents.