possibility to remove an imagery entry

[Klumbumbus]

There should be a way to mark an imagery id as "no longer available", so the entry will be removed from the users list. This would clean the users imagery list and would also be important if there is an source, where we loose the permission to trace from or never had. The list could be maintained somewhere in the java code or via the Maps page in the wiki.

For the german NRW-Atlas DOP40, which the provider shut down today, I choose this solution in the hope that the users will remove this entry from their list. If we delete the entry now, then the users which have saved this entry, will just receive a error message and may think that it is just a temporary problem. (In about 2 weeks or so, we can delete this entry completely.)

(Follow up from ticket:14086#comment:19)

[Klumbumbus]

fixed by r11527 if I understand right?

[stoecker]

Yes. Thought it will not affect current tested :-)