[Mayan EDMS: 1852] Re: Avoiding duplication

[Mayan EDMS: 1852] Re: Avoiding duplication

Two changes just recently landed on the code regarding this. - "Add support to search documents and document pages by checksum." (https://gitlab.com/mayan-edms/mayan-edms/commit/0820d0c0e6519853b1218e73993201ada688b4e8) - "Add duplicated document scan support."