Merge branch 'ce-insights-frontend' into 'master'

CE: Insights Frontend

See merge request gitlab-org/gitlab-ce!26284

app/views/layouts/nav/sidebar/_group.html.haml

@@ -45,6 +45,8 @@
                   %span
                     = _('Contribution Analytics')
+            = render_if_exists 'layouts/nav/group_insights_link'
+
       = render_if_exists "layouts/nav/ee/epic_link", group: @group
       - if group_sidebar_link?(:issues)

app/views/layouts/nav/sidebar/_project.html.haml

@@ -41,6 +41,8 @@
               = link_to project_cycle_analytics_path(@project), title: _('Cycle Analytics'), class: 'shortcuts-project-cycle-analytics' do
                 %span= _('Cycle Analytics')
+          = render_if_exists 'layouts/nav/project_insights_link'
+
       - if project_nav_tab? :files
         = nav_link(controller: sidebar_repository_paths) do
           = link_to project_tree_path(@project), class: 'shortcuts-tree qa-project-menu-repo' do