Display login of issue author in issue header
I think that this may be a nice improvement to display issue author login in issue header (when viewing issue).
Currently, if you want to mention author of an issue this is difficult as there is no author login displayed anywhere (I need to hover mouse over author's full name, and look into a status bar showing link to author's profile).
And we mention author frequently in a first comment on the issue.
I think login was there at some point in the past (I'm not sure though), so if it is not there from a good reason, we can at least add a tooltip that will appear when hovered mouse over author's full name.