Simplify the "Verbose Annotate Sidebar" patch.


This patch makes it simpler, because it skips displaying the full author name
and how long ago the changes were made; besides some simple fixes.

The rationale behind this is purely aesthetic: the author is already available
in the tooltip (and you should be able to tell anyway by its nickname), and
the "how long ago" was a bit distracting. All this is completely subjective, I
know, but I think these are "safe" settings.