A few more...
Otherwise the status is only updated when the issues page is viewed. This fixes a race condition where the issue may have been closed but the status won't reflect that and may still allow updates.
Otherwise you can reopen a closed poll and change the result.
Fix some security holes
Just changing the edit template is not enough, since a malicious user can still send a POST request.
Otherwise anyone can just end a vote.
Conflicts: main.py models.pyc templates/issue.html templates/overview.html