Merge branch 'add-delimiter-project-stats' into 'master'

Add delimiter to project stars and forks count

## What does this MR do?
Adds the `number_with_delimiter()`to the project stars and fork counts on the projects dashboard.

## Are there points in the code the reviewer needs to double check?
Shouldn't be any 😃  

## Why was this MR needed?
Improve readability and adhere to the [UI guide](https://gitlab.com/help/development/ui_guide.md#counts)

## What are the relevant issue numbers?
Closes #20746 

## Screenshots (if relevant)
Before:
![Screen_Shot_2016-08-09_at_1.30.44_PM](/uploads/69592ce220d64774e265cfbcfcb6864a/Screen_Shot_2016-08-09_at_1.30.44_PM.png)

After:
![Screen_Shot_2016-08-09_at_1.30.58_PM](/uploads/1470179256614c2e47cc9d0e49aeaf09/Screen_Shot_2016-08-09_at_1.30.58_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] 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 !5741

CHANGELOG

@@ -5,6 +5,7 @@ v 8.11.0 (unreleased)
   - Remove the http_parser.rb dependency by removing the tinder gem. !5758 (tbalthazar)
   - Ability to specify branches for Pivotal Tracker integration (Egor Lynko)
   - Fix don't pass a local variable called `i` to a partial. !20510 (herminiotorres)
+  - Add delimiter to project stars and forks count (ClemMakesApps)
   - Fix rename `add_users_into_project` and `projects_ids`. !20512 (herminiotorres)
   - Fix the title of the toggle dropdown button. !5515 (herminiotorres)
   - Rename `markdown_preview` routes to `preview_markdown`. (Christopher Bartz)

app/views/shared/projects/_project.html.haml

@@ -20,11 +20,11 @@
       - if forks
         %span
           = icon('code-fork')
-          = project.forks_count
+          = number_with_delimiter(project.forks_count)
       - if stars
         %span
           = icon('star')
-          = project.star_count
+          = number_with_delimiter(project.star_count)
       %span.visibility-icon.has-tooltip{data: { container: 'body', placement: 'left' }, title: visibility_icon_description(project)}
         = visibility_level_icon(project.visibility_level, fw: true)