Voting starts in March for the Drupal Association Board election.
"Content type", in Panels' sense, is "something you can put in a panel". Users are asking to put a flag link in a panel. This patch makes this possible.
Ideally, all this code should be placed in a separate '.inc' file. I hope to do that soon. (Panels' tech docs don't explain how to do this, not in a concise manner, so I haven't done this yet.)