Make it possible to 'delete' a user

[kaputtnik]

If a user wants to be deleted from the website, we should make this possible, also with respect to personal data of the user.

Provide a button in the users "edit profile" page to delete himself. I he clicks on it:
1. Log him out
2. Exchange the users E-mailaddress to something like <email address hidden>
3. Set user inactive
4. For all pages showing the users name, exchange the name to something like 'deleted User'

Any suggestions?

[GunChleoc (gunchleoc)]

Sounds good to me.

Make sure that the "Deleted User" doesn't receive any notifications, otherwise we'll get dead e-mails.

[kaputtnik (franku)]

Good point :-)

[kaputtnik (franku)]

The attached branch is working so far. What is missing is:

- Physically remove the avatar image from the server

One problem appears for the admin sites: I found currently no easy solution to show "Deleted User" in the admin pages. So over there the username will currently be shown. Disadvantage: When working in the admin pages, one can not distinguish a user who deleted himself against normal users. On the other site: If there will be more deleted users, it is may be problematic to distinguish between them. I think having the username in the admin pages isn't problematic in regard to privacy, so i leave it as is. Any notes about that issue?

GunChleoc: Although it is not ready for a code review, maybe you can proofread the intermediate page explaining what deleting means? See https://bazaar.launchpad.net/~widelands-dev/widelands-website/delete_user/view/head:/templates/wlprofile/delete_me.html

Thanks :-)