Adjustable separator between side by side diff files in Crucible.

When viewing side by side diffs in crucible on a normal size monitor (15 inches), it would be helpful if there was an adjustable separator bar between the diff files being viewed to be able to adjust the width of the viewing areas so that the use doesn't have to constantly scroll left and right. There are times when the user needs to see more of the content in the right file instead of the left file and it would very useful to be able to adjust the width of the left file so that part of it was showing and to allow for all of the contents of the right file to be displayed so that scrolling right and left would not be required.