Merge branch '20139-branch-icon' into 'master'

Add branch or tag icon to ref in builds page

## What does this MR do?
Add branch or tag icon to ref in builds page

## Why was this MR needed?
It's currently missing but should be there

## What are the relevant issue numbers?
Closes #20139 

## Screenshots (if relevant)
<img src="/uploads/fb5c9a285a1ce95c0aa8dfa5e32c5d7d/Screen_Shot_2016-07-22_at_9.14.39_AM.png" width="400px">


See merge request !5434

app/views/projects/ci/builds/_build.html.haml

@@ -22,6 +22,8 @@
 
       - if defined?(ref) && ref
         - if build.ref
+          .icon-container
+            = build.tag? ? icon('tag') : icon('code-fork')
           = link_to build.ref, namespace_project_commits_path(build.project.namespace, build.project, build.ref), class: "monospace branch-name"
         - else
           .light none