add possibility to register a test/temporary/edu box

[robarto]

Expected Behavior

I would like to register a box (e.g. from an edu), that shows live measurements. The data should be displayed live, but not saved to the major database.

the box should be deleted automatically after 100days.

Actual Behavior

Environment

• OS: Write here
• Browser & Version: Write here

[mariopesch]

There will be a new openSenseMap instance on: https://workshop.opensensemap.org/ The database is a clone but will be cleaned in some weeks.

Following features need to be implemented:

• automatic reset after a specific time (24 hours, 7 days?)
• no need for creating a openSenseMap account