sansarselim

current behaivour: ``` if same_name_exist: skip else: download ``` desired behaivour: ``` if same_name_exist: if same_size & same_checksum: skip else: download_with_another_name else: if same_size_exist & same_checksum: skip else: download; ```

it would be nice to be able to sort archives in the local archive by downloaded size, image count, etc.