Do not refresh data grid on selection (or mark as read)

Originally created by: prodevst...@gmail.com
Originally owned by: tortoisesvn

What steps will reproduce the problem?
1. After windows start open CommitMonitor or Scan for new commit
2. Assuming you have new commit and comments click on a unread comment/[r3]. your selection is cleared/data grid refreshed and you have no focus on
the actual revision/commit comment

What is the expected output? What do you see instead?
It should highlight the selected commit comment and mark it as read. But
when it marks it as read it refreshes the entire data grid. It should not
need to refresh entire data grid to mark single item as read.

What version of the product are you using? On what operating system?
CommitMonitor 1.6.7.509 on Windows XP (SP3)

Please provide any additional information below.
It makes it difficult to use the keyboard to go through the commit comments
one by one as the focus goes back to top of the data grid again. So you
have to scroll down again from top.