Add atom link tag to every page that has one.

app/views/dashboard/issues.html.haml

+= content_for :meta_tags do
+  - if current_user
+    = auto_discovery_link_tag(:atom, issues_dashboard_url(format: :atom, private_token: current_user.private_token), title: "#{current_user.name} issues")
+
 %h3.page-title
   Issues

app/views/dashboard/show.html.haml

+= content_for :meta_tags do
+  - if current_user
+    = auto_discovery_link_tag(:atom, dashboard_url(format: :atom, private_token: current_user.private_token), title: "All activity")
+
 - if @projects.any?
   .dashboard.row
     %section.activities.col-md-8

app/views/groups/issues.html.haml

+= content_for :meta_tags do
+  - if current_user
+    = auto_discovery_link_tag(:atom, issues_group_url(@group, format: :atom, private_token: current_user.private_token), title: "#{@group.name} issues")
+
 %h3.page-title
   Issues

app/views/groups/show.html.haml

+= content_for :meta_tags do
+  - if current_user
+    = auto_discovery_link_tag(:atom, group_url(@group, format: :atom, private_token: current_user.private_token), title: "#{@group.name} activity")
+
 .dashboard
   .header-with-avatar.clearfix
     = image_tag group_icon(@group), class: "avatar group-avatar s90"

app/views/layouts/_head.html.haml

@@ -5,6 +5,7 @@
   %title
     = "#{title} | " if defined?(title)
     GitLab
+
   = favicon_link_tag 'favicon.ico'
   = stylesheet_link_tag    "application", :media => "all"
   = stylesheet_link_tag    "print", :media => "print"
@@ -14,16 +15,8 @@
   %meta{name: 'viewport', content: 'width=device-width, initial-scale=1, maximum-scale=1'}
   %meta{name: 'theme-color', content: '#474D57'}
+  = yield(:meta_tags)
+
   = render 'layouts/google_analytics' if extra_config.has_key?('google_analytics_id')
   = render 'layouts/piwik' if extra_config.has_key?('piwik_url') && extra_config.has_key?('piwik_site_id')
   = render 'layouts/bootlint' if Rails.env.development?
-
-  -# Atom feed
-  - if current_user
-    - if controller_name == 'projects' && action_name == 'index'
-      = auto_discovery_link_tag :atom, projects_url(:atom, private_token: current_user.private_token), title: "Dashboard feed"
-    - if @project && !@project.new_record?
-      - if current_controller?(:tree, :commits)
-        = auto_discovery_link_tag(:atom, namespace_project_commits_url(@project.namespace, @project, @ref, format: :atom, private_token: current_user.private_token), title: "Recent commits to #{@project.name}:#{@ref}")
-      - if current_controller?(:issues)
-        = auto_discovery_link_tag(:atom, namespace_project_issues_url(@project.namespace, @project, :atom, private_token: current_user.private_token), title: "#{@project.name} issues")

app/views/projects/commits/show.html.haml

+= content_for :meta_tags do
+  - if current_user
+    = auto_discovery_link_tag(:atom, namespace_project_commits_url(@project.namespace, @project, @ref, format: :atom, private_token: current_user.private_token), title: "Recent commits to #{@project.name}:#{@ref}")
+
 = render "head"
 .tree-ref-holder

app/views/projects/issues/index.html.haml

+= content_for :meta_tags do
+  - if current_user
+    = auto_discovery_link_tag(:atom, namespace_project_issues_url(@project.namespace, @project, :atom, private_token: current_user.private_token), title: "#{@project.name} issues")
+
 .append-bottom-10
   .pull-right
     .pull-left

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

+= content_for :meta_tags do
+  - if current_user
+    = auto_discovery_link_tag(:atom, namespace_project_commits_url(@project.namespace, @project, @ref, format: :atom, private_token: current_user.private_token), title: "Recent commits to #{@project.name}:#{@ref}")
+  
 .tree-ref-holder
   = render 'shared/ref_switcher', destination: 'tree', path: @path

app/views/users/show.html.haml

+= content_for :meta_tags do
+  = auto_discovery_link_tag(:atom, user_url(@user, format: :atom), title: "Activity feed for #{@user.name}")
+
 .row
   = link_to '#aside', class: 'show-aside' do
     %i.fa.fa-angle-left