display the initial issue metadata with the initial issue post

i find it incredibly confusing sometimes, looking at issues, since the info at the very top has the current issue-wide values of a bunch of stuff, yet the original post might have had a different title, project, etc, etc. i think it'd make much more sense for the current values of the issue to be displayed at the top, then the original values of everything with the original post, then all the followups and the trail of what changed when. of course, this might look a little silly on initial posts that have no followups, so maybe the "current values" section should only appear once there are followups. or, better yet, it should only appear once there are followups that changed something.

unfortunately, although this seems like it should be a relatively minor UI change, implementation-wise, this is a mess. we don't actually save the original values at all, only the current values and the trail of changes. :( so, we'd have to either reverse-compute the originals (ugh!) or change the schema to start storing the originals. neither are very attractive options. but, the UI is driving me a little nuts as it currently exists, so i'd like to see it change.

note: this is sort of related to http://drupal.org/node/148712 but different. that's talking about the UI on the follow-up form. i'm talking about the UI of just viewing an issue.