Update documentation

[zwolf]

Add missing documentation for endpoints

• Tutorials
• field guides
• translations
• organizations
• inaturalist
• users/recents
• devise routes (/users, /oauth)
• Exportable routes for projects, workflows, and subject sets

Remove references to Papertrail and resource versioning from docs
The Papertrail gem was removed years ago from code and databases. But there are a bunch of references to it in documentation:

https://zooniverse.github.io/panoptes/#workflow-versions
https://zooniverse.github.io/panoptes/#subject-versions

Add which properties are externally writable in user project preferences
i.e., we allow editing of settings only by project owner/collabs