Add indicators for change for diffs
Created by: eseliger
Closes https://github.com/sourcegraph/sourcegraph/issues/12934
@AlicjaSuska turns out that's quite simple to do, so I went ahead and implemented it
Created by: eseliger
Closes https://github.com/sourcegraph/sourcegraph/issues/12934
@AlicjaSuska turns out that's quite simple to do, so I went ahead and implemented it