For all the files in a diff, we generate little change indicators that show the proportion of added/changed/removed lines. For binary files, we'd end up trying to re-parse the diff, and then just draw an empty circle. This looked particularly weird when the binary file was the only thing in the diff. This change updates this so that we generate some fake counts for binary files, based on whether it's a new, deleted, or updated file. This results in solid green, red, or yellow circles, rather than just an empty space. This also makes it so that if we don't have any raw counts for a diff, we hide the lines-changed indicator in the change description (this would previously say something like "Revision 4 ()") Testing Done: - Looked at a bunch of change descriptions for added/deleted/updated binary files. Saw that the "Diff" field now contained colored circles rather than empty spaces. - Saw that change descriptions for diffs that contained only empty files no longer had an empty set of parentheses after the diff revision number. - Looked at the diff file index and saw the same. - Ran unit tests.