dce and dct are merged into the same prefix

[andrawaag]

at line [#L180](https://github.com/multichill/toollabs/blob/master/bot/Europeana/Europeana_uploader.py#L180} and #181 dce and dct are both merged to dc. This should be done with caution. e.g. dct:identifier is a refinement of dce:identifier

An identifier according to the dct NS can be incorrect according to the dce NS

[multichill]

Thanks for pointing that out. This is an ancient bot from 2011 which is probably very broken by now. I have currently no intention on ever running it again.