Spynl update 5.44

 Important highlights from this release

1. tenant-based URL scheme: /tenants/<tenant ID>/<resource>[/<method>]
2. Pyramid 1.7
3. /about/roles
4. small improvements to behaviour of settings endpoints

All updates for this release

Bug

• Remove mention of superusers from messages to client when working on settings
• Show a clear error when no settings were applicable
• Empty roles list returned for master user

Story

• enable tenant-based URL scheme
• let resource classes name their paths
• Move to Pramid 1.7
• Refactor spynl.mongo so db access methods become simpler
• Change email passwordreset
• /about/roles