Don't let users validate a square they worked on

[aawiseman]

Or something like that -- I've seen in a few cases were new editors mapped and area then marked it as validated and left behind bad data.

Or (more complicated) only let more experienced or approved people validate their own squares.

[pgiraud]

This was addressed a while ago. #602
It looks like we're facing a regression somewhere.

[pgiraud]

This should be checked server-side as well. Sorry for my poor review on this pull request.

[smit1678]

I saw this working correctly on Friday at our workshop. New user tried to validate their own square but could not. @aawiseman did you happen to see this recently or replicate this?

[pgiraud]

@aawiseman FYI administrators or project managers can validate the tasks they worked on. Simple contributors don't.

[aawiseman]

Oh, my bad, I last saw it on the TeachOSM tasking manager. I do remember seeing it here though, but maybe that was before the code change? http://tasks.hotosm.org/project/1080

[bgirardot]

I think this is fixed. I will test and reopen if needed..

Thank you @aawiseman !