Merge branch 'search-commit-ui-fix' into 'master'

Fixed commit search UI

## What does this MR do?

Fixes the UI for commits in search.

If the scope of the search is commits then it renders the list in a `ul` to match the same styling as that on the commits UI.

## Screenshots (if relevant)

![Screen_Shot_2016-09-05_at_15.30.12](/uploads/f567a224be44d5a9b015ac5d1c399bd7/Screen_Shot_2016-09-05_at_15.30.12.png)

## What are the relevant issue numbers?

Closes #21868

See merge request !6205

app/views/search/_results.html.haml

@@ -10,6 +10,10 @@
         in group #{link_to @group.name, @group}
 
   .results.prepend-top-10
+    - if @scope == 'commits'
+      %ul.list-unstyled
+        = render partial: "search/results/commit", collection: @search_objects
+    - else
       .search-results
         - if @scope == 'projects'
           .term

app/views/search/results/_commit.html.haml

@@ -1,2 +1 @@
-.search-result-row
 = render 'projects/commits/commit', project: @project, commit: commit