ArtNet-Webservice/tests/relationAPI
Peery b8e07eb528 Introduced URL encoding, Art2Presence relations
URL parameters are now URL decoded by the webservice
The tests now URL encode the parameters for every request.

Art2Presence relations are now creatable with POST requests to /artnet/metadata/art and listing the presences in the body.

Art2Presence tests have been introduced with relate_art.py

Also updated column name artist.description artist.name to fit a db schema update.
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__init__.py Added Unit Tests to test the WebService
relate_art.py Introduced URL encoding, Art2Presence relations