View report of campsite information

[kitsuta]

From #58:
As an admin assigning campsites, I would like the system to keep track of:

• How many people each campsite can hold
• How many people are currently assigned to a campsite
• Whether or not a campsite is full
• The estimated noise level of a campsite

This would, at the very least, be available in a report.

[kitsuta]

This is out of scope for this year, but it should be doable next year.