Merge request file nav rename file icon
In the screenshot of the current implementation, the first file was a renamed file in the diff. Currently it defaults to a black dash as the icon.
Description
Simply use the green plus icon instead. This is a more rare occurrence. Re-naming a file is semantically similar to adding a file. So we can just recycle the icon. The icon is specified in https://gitlab.com/gitlab-org/gitlab-ce/issues/36687.
Edited by Victor Wu