Spynl update 5.42

Important highlights from this release

1. Spynl can parse UUIDs in _id fields (UPDATE: this had to be turned off for the moment)
2. The /webshops endpoint was implemented
3. The final roles structure we decided upon in our design process is now in place
4. One breaking change: add-logo endpoint returns the image URL now
5. Docker image has upgraded OS and Python version

All updates for this release

Story

• Move Spynl Docker image to using Python 3.5 and Ubuntu 16.04
• Change existing code to use authorizationType instead of authorization_type and change roles data structure
• Image/Logo upload endpoint API cleanup
• Teach spynl to deal with UUIDs (bson binary type 4) in customers
• /webshops - list available webshops