Merge branch '24022-update-styling-commit-sha-in-branches-list' into 'master'

Updated styling commit SHA on branches page

## What does this MR do?

Updated styling of commit SHA on the branches page to include the commit icon and be blue

## Are there points in the code the reviewer needs to double check?


## Why was this MR needed?
to make the branches page in line with upcoming update to the commit list, which also styles the commit sha, but slightly different.

## Screenshots (if relevant)
before:
![image](/uploads/ce6eae30d0a07be2d76881d3c5e04e7d/image.png)

after:
![image](/uploads/a10df4fe6efbb168fc9b51ae87f53da7/image.png)


## Does this MR meet the acceptance criteria?

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG.md) entry added
- [ ] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- [ ] API support added
- Tests
  - [ ] Added for this feature/bug
  - [ ] All builds are passing
- [ ] Conform by the [merge request performance guides](http://docs.gitlab.com/ce/development/merge_request_performance_guidelines.html)
- [ ] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [ ] Branch has no merge conflicts with `master` (if it does - rebase it please)
- [ ] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

## What are the relevant issue numbers?

Closes #24022

See merge request !7219

CHANGELOG.md

@@ -67,6 +67,7 @@ entry.
 - Improve search query parameter naming in /admin/users !7115 (YarNayar)
 - Fix table pagination to be responsive
 - Allow to search for user by secondary email address in the admin interface(/admin/users) !7115 (YarNayar)
+- Updated commit SHA styling on the branches page.
 
 ## 8.13.3 (2016-11-02)
 

app/assets/stylesheets/pages/commits.scss

@@ -164,7 +164,22 @@
 .branch-commit {
   color: $gl-gray;
 
-  .commit-id,
+  .commit-icon {
+    text-align: center;
+    display: inline-block;
+
+    svg {
+      height: 14px;
+      width: 14px;
+      vertical-align: middle;
+      fill: $table-text-gray;
+    }
+  }
+
+  .commit-id {
+    color: $gl-link-color;
+  }
+
   .commit-row-message {
     color: $gl-gray;
   }

app/views/projects/branches/_commit.html.haml

 .branch-commit
+  .icon-container.commit-icon
+    = custom_icon("icon_commit")
   = link_to commit.short_id, namespace_project_commit_path(project.namespace, project, commit.id), class: "commit-id monospace"
   ·
   %span.str-truncated