Ahodges/doc/relnotes20141021

@mhoeber , @catong , @srpearce please take a look -- anything else to add? 
@explorerleslie , @shnayder ?
well, this *was* just a bug fix to a corner case--> clicking your own username in this situation, immediately after you yourself marked an answer as correct, would result in a 404 error. Navigating away and then clicking on the link worked fine, as did clicking on someone else's username in the same message. So, I personally don't think it's worth doing screen shots or otherwise drawing a lot of attention to this. Since the T&L team found this error themselves, it's not entirely clear that we even need to include it.