Merge branch '19499-project-dropdowns' into 'master'

19499 Update project dropdowns

## What does this MR do?
Separates dropdowns on project homepage and makes caret icon consistent.

## Screenshots (if relevant)

Before:
![Screen_Shot_2016-10-04_at_6.20.27_PM](/uploads/76823e3836db43a60cfcabd67940659f/Screen_Shot_2016-10-04_at_6.20.27_PM.png)

After:
![Screen_Shot_2016-10-04_at_6.19.52_PM](/uploads/164e40e1788b1d6a8aed29ab3348370a/Screen_Shot_2016-10-04_at_6.19.52_PM.png)

## Does this MR meet the acceptance criteria?

- [ ] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) 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 you do - 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 #19499

See merge request !6687

app/assets/stylesheets/pages/projects.scss

@@ -146,7 +146,8 @@
   }
 
   .project-repo-btn-group,
-  .notification-dropdown {
+  .notification-dropdown,
+  .project-dropdown {
     margin-left: 10px;
   }
 

app/views/projects/buttons/_download.html.haml

 - if !project.empty_repo? && can?(current_user, :download_code, project)
-  %span.btn-group{class: 'hidden-xs hidden-sm btn-grouped'}
+  %span{class: 'hidden-xs hidden-sm'}
     .dropdown.inline
       %button.btn{ 'data-toggle' => 'dropdown' }
         = icon('download')
-        %span.caret
+        = icon("caret-down")
         %span.sr-only
           Select Archive Format
       %ul.dropdown-menu.dropdown-menu-align-right{ role: 'menu' }

app/views/projects/buttons/_dropdown.html.haml

 - if current_user
-  .btn-group
+  .dropdown.inline.project-dropdown
     %a.btn.dropdown-toggle{href: '#', "data-toggle" => "dropdown"}
       = icon('plus')
+      = icon("caret-down")
     %ul.dropdown-menu.dropdown-menu-align-right.project-home-dropdown
       - can_create_issue = can?(current_user, :create_issue, @project)
       - merge_project = can?(current_user, :create_merge_request, @project) ? @project : (current_user && current_user.fork_of(@project))

app/views/projects/show.html.haml

@@ -71,9 +71,8 @@
           = render 'shared/members/access_request_buttons', source: @project
           = render "projects/buttons/koding"
 
-        .btn-group.project-repo-btn-group
-          = render 'projects/buttons/download', project: @project, ref: @ref
-          = render 'projects/buttons/dropdown'
+        = render 'projects/buttons/download', project: @project, ref: @ref
+        = render 'projects/buttons/dropdown'
 
         = render 'shared/notifications/button', notification_setting: @notification_setting
 - if @repository.commit