xCSV importer
Show also attribute data from the API.

Original idea was that this data is not visible from the API as it can contain private data which is used as search query when requesting data from the API.
But there was need to see also this data so here it is.
doc
Moved the files to correct location so that I can merge them
Moved also serializers.py to correct location waiting for merge
Merge ad hoc changes
Documented all made changes and other things we decided in a meeting today