Merge branch 'add-time-repo-view' into 'master'

Add last commit time to repo view

## What does this MR do?
Adds the last commit time to the repository file view

## Are there points in the code the reviewer needs to double check?
Just need to make sure it works well in responsive (It is working well to my knowledge 😃 )

## Why was this MR needed?
Allow users to see more information related to the last commit

## What are the relevant issue numbers?
Closes #20224 

## Screenshots (if relevant)
Before:
![Screen_Shot_2016-07-27_at_1.54.03_PM](/uploads/2b3da5c6b82965fd302abe590d2b0e46/Screen_Shot_2016-07-27_at_1.54.03_PM.png)

After:
![Screen_Shot_2016-07-27_at_1.54.09_PM](/uploads/1f5f5fe1bd6f193090067a41ac4e3c66/Screen_Shot_2016-07-27_at_1.54.09_PM.png)

## Does this MR meet the acceptance criteria?

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- Tests
  - [x] Added for this feature/bug
  - [x] All builds are passing
- [x] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

See merge request !5530

CHANGELOG

@@ -24,6 +24,7 @@ v 8.12.0 (unreleased)
   - Fix groups sort dropdown alignment (ClemMakesApps)
   - Add horizontal scrolling to all sub-navs on mobile viewports (ClemMakesApps)
   - Fix markdown help references (ClemMakesApps)
+  - Add last commit time to repo view (ClemMakesApps)
   - Added tests for diff notes
   - Add a button to download latest successful artifacts for branches and tags !5142
   - Add delimiter to project stars and forks count (ClemMakesApps)

app/assets/stylesheets/pages/tree.scss

@@ -11,6 +11,16 @@
     }
   }
 
+  .last-commit {
+    max-width: 506px;
+
+    .last-commit-content {
+      @include str-truncated;
+      width: calc(100% - 140px);
+      margin-left: 3px;
+    }
+  }
+
   .tree-table {
     margin-bottom: 0;
 

app/views/projects/tree/_tree_content.html.haml

@@ -5,16 +5,17 @@
         %tr
           %th Name
           %th Last Update
-          %th.hidden-xs
-            .pull-left Last Commit
-            .last-commit.hidden-sm.pull-left
-               
+          %th.hidden-xs.last-commit
+            Last Commit
+            .last-commit-content.hidden-sm
               %i.fa.fa-angle-right
                
               %small.light
                 = link_to @commit.short_id, namespace_project_commit_path(@project.namespace, @project, @commit), class: "monospace"
                 –
-                = truncate(@commit.title, length: 50)
+                = time_ago_with_tooltip(@commit.committed_date)
+                –
+                = @commit.full_title
             = link_to 'History', namespace_project_commits_path(@project.namespace, @project, @id), class: 'pull-right'
 
       - if @path.present?