trend export via csv

[Trond Hoyem]

Try uploading to the root directory and check that the user has all required permissions. You can start by giving all permissions to check if it works at all.

Not entirely sure what I had wrong, but it works now. It might have been some misspelling in the script, but I did a lot of copy/paste now when testing, so not sure what I had to start with. 

Anyway, it works now.