Create new dev data camps

Many features have been added since we last added dev data camps. To make sure we develop and test with realistic data, some new camps should be added, including:

- 5 or more collaborators
- A camp where Bi-Pi is a manager, a camp where he is a member and a camp where he is a guest
- Day responsibles (but not on all days)
- Conditional camp fields (organizer, coach name etc.)
- More categories than fit on one row on a portrait mode picasso
- Some dark and light color categories
- Categories using different numbering schemes, but still enough schedule entries per day to get to two-digit numbers (e.g. 2.12)
- Schedule entries which go across a day boundary / are 24 hours or longer
- Times where 3 or more schedule entries overlap at the same time
- Schedule entries with and without location and activity responsibles (some single, some multiple, some all)
- Progress labels on most activities
- Most activities with the default category layouts from our camp templates
- Some activities with customized layouts
- Occasional emoji in activity titles and contents
- Long storyboard sections (in the order of 0.5-2 A4 pages long)
- Using multiple newlines in a row to create spacing in a storyboard section
- Nested enumeration lists and bullet lists
- Enumeration lists which start at numbers other than 1., and go to numbers higher than 9.
- Some links in some of the rich text fields
- ...