Instances: Duplicate

[nathanhollows]

Duplicating instances would be really handy. It would enable coordinators to create new experiences without a lot of overheard.

Example use cases:

• Run multiple classes with differing content, i.e., different focuses or level of understanding, but with the same locations
• Time-driven mechanics vs free-roam discovery vs choose the next of n locations

This change would allow educators to experiment with different approaches to experiential, problem-based, and free-choice learning.

Duplicating an instance should:

• [x] Create a new instance
• [x] Copy over all locations (linked to the same coords/codes)
• [x] Not copy over teams (which must be globally unique)
• [x] Not copy over activity/scans
• [x] Navigate the coordinator to the instance settings page