user is able to edit station metadata

[tnier01]

The user is able to edit the stations metadata not only during creation of a station but also afterwards.

change:

• name
• email address
• location

Is a user management needed to avoid misuse? A simplified solution could be that an email address is required but that there is also a checkbox if updates concerning bird visits should be send or not. With the initial mail the user receives a code. With this code the user can change the metadata in a user interface on the website.