The dvcs branch had a few typos that slipped through review; this patch

addresses those.
In addition, two bugs have been fixed. The first is that the expanded

commit description would show if the description contained a trailing

newline. Now, we trim the description and summary before comparing them

to determine if we should show the extended description.
The second bug is that the diff viewer would attempt to view the commit

range of an interdiff, which is invalid. Now, we only inspect the commit

range when interdiffs are not selected.

The above issues no longer occur.