Merge branch 'rk/update-icons' into 'master'

Replacing Font-Awesome Icons on Wiki Pages

Closes #225894

See merge request gitlab-org/gitlab!35975

app/views/shared/wikis/_sidebar.html.haml

@@ -6,7 +6,7 @@
 
       - git_access_url = wiki_path(@wiki, action: :git_access)
       = link_to git_access_url, class: active_nav_link?(path: 'wikis#git_access') ? 'active' : '', data: { qa_selector: 'clone_repository_link' } do
-        = icon('cloud-download', class: 'append-right-5')
+        = sprite_icon('download', size: 16, css_class: 'append-right-5')
         %span= _("Clone repository")
 
     .blocks-container

app/views/shared/wikis/pages.html.haml

@@ -11,7 +11,7 @@
 
   .nav-controls.pb-md-3.pb-lg-0
     = link_to wiki_path(@wiki, action: :git_access), class: 'btn' do
-      = icon('cloud-download')
+      = sprite_icon('download')
       = _("Clone repository")
 
     .dropdown.inline.wiki-sort-dropdown
@@ -19,7 +19,7 @@
         .btn-group{ role: 'group' }
           %button.dropdown-toggle{ type: 'button', data: { toggle: 'dropdown', display: 'static' }, class: 'btn btn-default' }
             = sort_title
-            = icon('chevron-down')
+            = sprite_icon('chevron-down')
           %ul.dropdown-menu.dropdown-menu-right.dropdown-menu-selectable.dropdown-menu-sort
             %li
               = sortable_item(s_("Wiki|Title"), wiki_path(@wiki, action: :pages, sort: Wiki::TITLE_ORDER), sort_title)