Summary: Ref T4245. Full commit display names (like `rPaaaa`) are going to be obnoxious soon in some cases (e.g., `rPaaaa` becomes `R123:aaaa`, which is much uglier) so reduce how often we show the repository in cases where it isn't really necessary to include it.
Test Plan:
- Saw no more `rX` on repository list view for Git/Mercurial (still present for Subversion).
- Saw no more `rX` on various repository detail views, except when referencing other commits (e.g., mentions).
- Grepped for removed `getShortName()`.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T4245
Differential Revision: https://secure.phabricator.com/D14990
b848ab87b3