Fix filename parsing when git filenames include spaces.
Review Request #180 - Created Nov. 29, 2016 and updated
This is not perfect, but this should fix 99% of the cases. This will still show incorrect filenames if path looks like /path/to b/your/file, but hopefully that should be pretty rare.. Testing Done: Tested with the dev server. Fixes bug 3558. Reviewed at https://reviews.reviewboard.org/r/6466/